TY - RPRT TI - Problems and pitfalls in anticoagulant therapy. AU - J H OLWIN AU - J L KOPPEL PY - 1958 DO - 10.1016/s0039-6109(16)35378-6 UR - https://pubmed.ncbi.nlm.nih.gov/13556511/ ID - 13556511 ER -