Letter: Adjustment to low-dose heparin to prevent thrombosis.
D001780:Blood Coagulation Tests; D006493:Heparin / Q000008:administration & dosage* / Q000627:therapeutic use; D006801:Humans; D010978:Platelet Factor 4; D013927:Thrombosis / Q000517:prevention & control*
D010978:Platelet Factor 4; D006493:Heparin