This article refers to:
Almeneessier AS, Alballa NS, Alsalman BH, Aleissi S, Olaish AH, BaHammam AS. Nat Sci Sleep. 2019;11:231–239.
The authors have advised affiliation 1 on page 231 is incorrect. The correct affiliation should read “1Department of Medicine, College of Medicine, the University Sleep Disorders Center, King Saud University, Riyadh, Saudi Arabia”.
The authors apologize for this error.