title: Menstrual cycles are influenced by sunshine.
authors.affiliation: Institute of Internal Medicine, Siberian Branch of the Russian Academy of Medical Sciences, Novosibirsk, Russia. kvdani@mail.ru
authors.forename: Konstantin V
authors.initials: KV
authors.lastname: Danilenko
authors.forename: Oksana Y
authors.initials: OY
authors.lastname: Sergeeva
authors.forename: Evgeniy G
authors.initials: EG
authors.lastname: Verevkin