For citations:

Drapkina O.M., Shepel' R.N. SLEEP DURATION: MODERN VIEW OF THE PROBLEM FROM THE STANDPOINT OF A CARDIOLOGIST. Rational Pharmacotherapy in Cardiology. 2015;11(4):413-419. (In Russ.) https://doi.org/10.20996/1819-6446-2015-11-4-413-419