Links for first review exercise:

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0209742

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0112942

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0202046

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0194279

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0180826

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0226505