TY - GEN AU - Sandset,Per Morten TI - Combined oral contraceptives increase risk of venous thrombosis according to oestrogen dose and type of progestogen SN - 1473-6810 PY - 2015///0515 KW - Contraceptives, Oral, Combined KW - adverse effects KW - Female KW - Humans KW - Pulmonary Embolism KW - chemically induced KW - Venous Thrombosis N1 - Publication Type: Journal Article; Comment UR - https://doi.org/10.1136/ebmed-2014-110011 ER -