TY - STAND
AU - S. Jick
AU - K. Hagberg
AU - J. Kaye
AU - H. Jick
BT - Contraception
DO - 10.1016/j.contraception.2009.02.013
M1 - 2
PY - 2009
SP - 142
EP - 51
T2 - Contraception
TI - The risk of unintended pregnancies in users of the contraceptive patch compared to users of oral contraceptives in the UK General Practice Research Database
VL - 80
SN - 0010-7824
ER -