Mar. 23 -- FRIDAY, Jan. 18 (HealthDay News) -- A birth control skin patch used by many American women carries a risk of serious blood clots that is higher than the risk already recognized for the ...
EE: Ethinyl estradiol; LNG: Levonorgestrel; OC: Oral contraceptive; RR: Relative risk; VTE: Venous thromboembolism. Transdermal contraceptive patches provide a more convenient delivery system for ...