Hanna, L Menses and duration of cycles. [electronic resource] - BETA : bulletin of experimental treatments for AIDS : a publication of the San Francisco AIDS Foundation Apr 1999 - 18 p. digital Publication Type: Newspaper Article; Journal Article ISSN: 1058-708X Subjects--Topical Terms: CD4 Lymphocyte CountFemaleHIV Infections--immunologyHumansMenstrual Cycle--immunology