TY - RPRT TI - Association between oral contraceptive use and thromboembolism: a new approach to itsinvestigation based on plasma fibrinogen chromatography. AU - N Alkjaersig AU - A Fletcher AU - R Burstein PY - 1975 DO - 10.1016/s0002-9378(16)33492-5 UR - https://pubmed.ncbi.nlm.nih.gov/50741/ ID - 50741 ER -