title: Non-biological factors in day to day variation of heparin requirements.
authors.affiliation: Department of Medicine, McMaster University, Hamilton, Ontario, Canada.
authors.forename: A G
authors.initials: AG
authors.lastname: Fennerty
authors.forename: M N
authors.initials: MN
authors.lastname: Levine
mesh_terms: D006493:Heparin / Q000008:administration & dosage*; D006801:Humans; D007260:Infusion Pumps; D010314:Partial Thromboplastin Time; D013923:Thromboembolism / Q000097:blood / Q000188:drug therapy*; D013997:Time Factors
chemical_list: D006493:Heparin