Epidemiological disasters.
Cohen
J
J
Clinique Marignan, Paris, France.
D003276:Contraceptives, Oral / Q000009:adverse effects*; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D013924:Thrombophlebitis / Q000139:chemically induced / Q000453:epidemiology*
D003276:Contraceptives, Oral