RUDN Journal of MedicineRUDN Journal of Medicine2313-02452313-0261Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)3015Conference Report, Theses of ReportPhotoperiodical regulation of biorhyths and summer-winter time switching consequencesMarkinaV V-KuzinS Msmkuzin@mail.ruMoscow State University of Medicine and Dentistry15072012S715115207092016Copyright © 2012,2012