@article {pmid9927095,
	title = {Preoperative vs postoperative initiation of low-molecular-weight heparin prophylaxis against venous thromboembolism in patients undergoing elective hip replacement},
	journal = {Arch. Intern. Med.},
	volume = {159},
	number = {2},
	year = {1999},
	month = {Jan},
	pages = {137{\textendash}141},
	author = {Hull, R. D. and Brant, R. F. and Pineo, G. F. and Stein, P. D. and Raskob, G. E. and Valentine, K. A.}
}
