Sustained increase in anti-Xa activity by low-dose heparin in medical patients.
D004305:Dose-Response Relationship, Drug; D005170:Factor X / Q000037:antagonists & inhibitors*; D015951:Factor Xa; D006493:Heparin / Q000627:therapeutic use*; D006801:Humans; D013924:Thrombophlebitis / Q000188:drug therapy; D013997:Time Factors
D005170:Factor X; D006493:Heparin; D015951:Factor Xa