For citations:
Madaeva I.M., Kurashova N.A., Semenova N.V., Ukhinov E.B., Berdina O.N., Bairova T.A., Belskikh A.V., Kolesnikova L.I., Kolesnikov S.I. Obstructive sleep apnea syndrome: association of serum melatonin, increased daytime sleepiness, and intermitting night hypoxemia. PULMONOLOGIYA. 2021;31(6):768-775. (In Russ.) https://doi.org/10.18093/0869-0189-2021-31-6-768-775