RT Journal Article SR Electronic T1 Melatonin for jet lag JF Drug and Therapeutics Bulletin JO Drug Ther Bull FD BMJ Publishing Group Ltd SP 21 OP 24 DO 10.1136/dtb.2019.000074 VO 58 IS 2 YR 2020 UL http://dtb.bmj.com/content/58/2/21.abstract AB