Jafar NK, Tham EK, Eng DZ, Goh DY, Teoh OH, Lee YS, Shek LP, Yap F, Chong YS, Meaney MJ, Gooley JJ, Broekman BF; Gusto Study Group.

Sleep Med. 2017 Feb;30:240-244. doi: 10.1016/j.sleep.2016.11.015. PubMed PMID: 28215256.