1 Pulmonology Department, I.M. Sechenov First Moscow State Medical University (Sechenov University), 8/2, Trubetskaya Str., 119991, Moscow, Russia. serg_avdeev@list.ru.
2 Pulmonology Department, I.M. Sechenov First Moscow State Medical University (Sechenov University), 8/2, Trubetskaya Str., 119991, Moscow, Russia.