@article {pmid9531224,
	title = {Relation between the time to achieve the lower limit of the APTT therapeutic range and recurrent venous thromboembolism during heparin treatment for deep vein thrombosis},
	journal = {Arch. Intern. Med.},
	volume = {157},
	number = {22},
	year = {1997},
	pages = {2562{\textendash}2568},
	author = {Hull, R. D. and Raskob, G. E. and Brant, R. F. and Pineo, G. F. and Valentine, K. A.}
}
