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diff --git a/02-data/raw/snowballing_start_unincorporated/Lau2023/175-of-192 b/02-data/raw/02_snowballing-starts/Lau2023/175-of-192
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diff --git a/02-data/raw/snowballing_start_unincorporated/Lau2023/DOIs.txt b/02-data/raw/02_snowballing-starts/Lau2023/DOIs.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Lau2023/DOIs_only.txt b/02-data/raw/02_snowballing-starts/Lau2023/DOIs_only.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Lau2023/references.txt b/02-data/raw/02_snowballing-starts/Lau2023/references.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Lindsay2016/16-of-18 b/02-data/raw/02_snowballing-starts/Lindsay2016/16-of-18
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diff --git a/02-data/raw/snowballing_start_unincorporated/Lindsay2016/DOIs.txt b/02-data/raw/02_snowballing-starts/Lindsay2016/DOIs.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Lindsay2016/DOIs_only.txt b/02-data/raw/02_snowballing-starts/Lindsay2016/DOIs_only.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/McDowell2015/23-of-32 b/02-data/raw/02_snowballing-starts/McDowell2015/23-of-32
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diff --git a/02-data/raw/snowballing_start_unincorporated/McDowell2015/DOIs.txt b/02-data/raw/02_snowballing-starts/McDowell2015/DOIs.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/McDowell2015/DOIs_only.txt b/02-data/raw/02_snowballing-starts/McDowell2015/DOIs_only.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/McDowell2015/references.txt b/02-data/raw/02_snowballing-starts/McDowell2015/references.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Nandi2018/115-of-118 b/02-data/raw/02_snowballing-starts/Nandi2018/115-of-118
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diff --git a/02-data/raw/snowballing_start_unincorporated/Nandi2018/DOIs.txt b/02-data/raw/02_snowballing-starts/Nandi2018/DOIs.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Nandi2018/DOIs_only.txt b/02-data/raw/02_snowballing-starts/Nandi2018/DOIs_only.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Nandi2018/references.txt b/02-data/raw/02_snowballing-starts/Nandi2018/references.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Nevala2015/11-of-11 b/02-data/raw/02_snowballing-starts/Nevala2015_included/11-of-11
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diff --git a/02-data/raw/snowballing_start_unincorporated/Nevala2015/DOIs.txt b/02-data/raw/02_snowballing-starts/Nevala2015_included/DOIs.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Nevala2019/30-of-38 b/02-data/raw/02_snowballing-starts/Nevala2019/30-of-38
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diff --git a/02-data/raw/snowballing_start_unincorporated/Nevala2019/DOIs.txt b/02-data/raw/02_snowballing-starts/Nevala2019/DOIs.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Pickett2015/110-of-138 b/02-data/raw/02_snowballing-starts/Pickett2015/110-of-138
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diff --git a/02-data/raw/snowballing_start_unincorporated/Pickett2015/DOIs.txt b/02-data/raw/02_snowballing-starts/Pickett2015/DOIs.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Psaki2022/63-of-91 b/02-data/raw/02_snowballing-starts/Psaki2022/63-of-91
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diff --git a/02-data/raw/snowballing_start_unincorporated/Psaki2022/DOIs.txt b/02-data/raw/02_snowballing-starts/Psaki2022/DOIs.txt
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diff --git a/02-data/raw/02_snowballing-starts/README.md b/02-data/raw/02_snowballing-starts/README.md
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+++ b/02-data/raw/02_snowballing-starts/README.md
@@ -0,0 +1,18 @@
+# Snowballing starters
+
+These directories contain the references and DOIs for studies that started the snowballing process.
+
+Each directory is named after a (usually systematic review) study which is used to start the process, with the same citation key as in the Zotero sample pool. 
+
+The directories contain a `references.txt` file which contains all relevant references mentioned in the study, enumerated. 
+Usually this will be either *all* references used in the study or only those included in the review itself, if mentioned separately.
+
+The directories also contain a `DOIs.txt` and `DOIs_only.txt` file, 
+which contain the aforementioned references paired with DOI numbers where available and the DOI numbers only, respectively.
+
+Finally, each directory contains an empty `<num>-of-<num>` file with the placeholders representing two numbers.
+The numbers point out the total amount of references for this study (the last), 
+as well as the number of DOIs able to be extracted for them (the first).
+
+A few directories are doubled, and one will usually carry the `StudyYear` name while the other will be `StudyYear_included`.
+For these, the `StudyYear` directory contains references for *all* references mentioned in the study, while the `StudyYear_included` directory only contains references actually used in the review study.
diff --git a/02-data/raw/snowballing_start_unincorporated/Ravindran2012/16-of-45 b/02-data/raw/02_snowballing-starts/Ravindran2012/16-of-45
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diff --git a/02-data/raw/snowballing_start_unincorporated/Ravindran2012/DOIs.txt b/02-data/raw/02_snowballing-starts/Ravindran2012/DOIs.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Ravindran2012/DOIs_only.txt b/02-data/raw/02_snowballing-starts/Ravindran2012/DOIs_only.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Ravindran2012/references.txt b/02-data/raw/02_snowballing-starts/Ravindran2012/references.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Ray2017/49-of-69 b/02-data/raw/02_snowballing-starts/Ray2017/49-of-69
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diff --git a/02-data/raw/snowballing_start_unincorporated/Ray2017/DOIs.txt b/02-data/raw/02_snowballing-starts/Ray2017/DOIs.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Ray2017/DOIs_only.txt b/02-data/raw/02_snowballing-starts/Ray2017/DOIs_only.txt
similarity index 100%
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diff --git a/02-data/raw/snowballing_start_unincorporated/Ray2017/references.txt b/02-data/raw/02_snowballing-starts/Ray2017/references.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Rydenfalt2020/16-of-16 b/02-data/raw/02_snowballing-starts/Rydenfalt2020/16-of-16
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diff --git a/02-data/raw/snowballing_start_unincorporated/Rydenfalt2020/DOIs.txt b/02-data/raw/02_snowballing-starts/Rydenfalt2020/DOIs.txt
similarity index 100%
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diff --git a/02-data/raw/snowballing_start_unincorporated/Rydenfalt2020/DOIs_only.txt b/02-data/raw/02_snowballing-starts/Rydenfalt2020/DOIs_only.txt
similarity index 100%
rename from 02-data/raw/snowballing_start_unincorporated/Rydenfalt2020/DOIs_only.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Rydenfalt2020/references.txt b/02-data/raw/02_snowballing-starts/Rydenfalt2020/references.txt
similarity index 100%
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diff --git a/02-data/raw/snowballing_start_unincorporated/Shaw2014/44-of-69 b/02-data/raw/02_snowballing-starts/Shaw2014/44-of-69
similarity index 100%
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diff --git a/02-data/raw/snowballing_start_unincorporated/Shaw2014/DOIs.txt b/02-data/raw/02_snowballing-starts/Shaw2014/DOIs.txt
similarity index 100%
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diff --git a/02-data/raw/snowballing_start_unincorporated/Shaw2014/DOIs_only.txt b/02-data/raw/02_snowballing-starts/Shaw2014/DOIs_only.txt
similarity index 100%
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diff --git a/02-data/raw/snowballing_start_unincorporated/Shaw2014/references.txt b/02-data/raw/02_snowballing-starts/Shaw2014/references.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Winkel2021/88-of-90 b/02-data/raw/02_snowballing-starts/Winkel2021/88-of-90
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diff --git a/02-data/raw/snowballing_start_unincorporated/Winkel2021/DOIs.txt b/02-data/raw/02_snowballing-starts/Winkel2021/DOIs.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Winkel2021/DOIs_only.txt b/02-data/raw/02_snowballing-starts/Winkel2021/DOIs_only.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/Winkel2021/references.txt b/02-data/raw/02_snowballing-starts/Winkel2021/references.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/deGeus2022/27-of-32 b/02-data/raw/02_snowballing-starts/deGeus2022/27-of-32
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diff --git a/02-data/raw/snowballing_start_unincorporated/deGeus2022/DOIs.txt b/02-data/raw/02_snowballing-starts/deGeus2022/DOIs.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/deGeus2022/DOIs_only.txt b/02-data/raw/02_snowballing-starts/deGeus2022/DOIs_only.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/deGeus2022/references.txt b/02-data/raw/02_snowballing-starts/deGeus2022/references.txt
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diff --git a/02-data/raw/snowballing_start_unincorporated/vanderWal2021/17-of-19 b/02-data/raw/02_snowballing-starts/vanderWal2021/17-of-19
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diff --git a/02-data/raw/snowballing_start_unincorporated/vanderWal2021/DOIs_only.txt b/02-data/raw/02_snowballing-starts/vanderWal2021/DOIs_only.txt
similarity index 100%
rename from 02-data/raw/snowballing_start_unincorporated/vanderWal2021/DOIs_only.txt
rename to 02-data/raw/02_snowballing-starts/vanderWal2021/DOIs_only.txt
diff --git a/02-data/raw/snowballing_start_unincorporated/vanderWal2021/references.txt b/02-data/raw/02_snowballing-starts/vanderWal2021/references.txt
similarity index 100%
rename from 02-data/raw/snowballing_start_unincorporated/vanderWal2021/references.txt
rename to 02-data/raw/02_snowballing-starts/vanderWal2021/references.txt