Heparin prophylaxis.
D000368:Aged; D005260:Female; D006493:Heparin / Q000627:therapeutic use*; D006801:Humans; D008875:Middle Aged; D011183:Postoperative Complications / Q000517:prevention & control*; D012737:Sex Factors; D013924:Thrombophlebitis / Q000517:prevention & control*
D006493:Heparin