[Environment and menstrual cycle; studies on 25 monozygotic twins].
D004777:Environment; D005260:Female; D006801:Humans; D008597:Menstrual Cycle; D008598:Menstruation / Q000502:physiology*; D014427:Twins; D014430:Twins, Monozygotic
ENVIRONMENT; MENSTRUATION/physiology; TWINS
Umwelt und Zyklus; eine Untersuchung an 25 eineiigen Zwillingspaaren.