“…First, the reference sections within all papers identified for inclusion within the review were scrutinised for omissions. Second, the reference sections of existing review and position papers on the relationship between sleep and suicide were also checked for omissions (Agargun and Besiroglu, 2005, Bernert and Joiner, 2007, Bernert et al, 2015, Bernert and Nadorff, 2015, Liu and Buysse, 2006, Malik et al, 2014, McCall and Black, 2013, Norra et al, 2011, Pigeon and Caine, 2010, Pigeon et al, 2012, Singareddy and Balon, 2001, Winsper and Tang, 2014, Woznica et al, 2015). Furthermore, the publication history of prominent researchers actively investigating the sleep suicide relationship, were reviewed for additional papers which could be included (i.e., Agargun, Bernert, McCall, Nadorff, Pigeon and Hochard).…”