00398    a2200121   4500020001500000082001500015245009500030260005000125300001900175440003800194650001700232650002700249  a9241208775  a616.1bCAR  aCardiovascular disease and steroid hormane contraceptionbreport of a WHO scientific group  aGenevabWorld Health Organizationc1998g1998  avii,90p.c24cm  aWHO technical report series ; 877  aRisk factors  aCardiovascular disease