TY - GEN AU - Clarke-Pearson,D L TI - Prevention of recurrent venous thrombosis: warfarin versus heparin SN - 0028-4793 PY - 1980///0425 KW - Heparin KW - therapeutic use KW - Humans KW - Recurrence KW - Thrombophlebitis KW - diagnosis KW - Warfarin N1 - Publication Type: Comparative Study; Letter ER -