@article {pmid9361572,
	title = {The importance of initial heparin treatment on long-term clinical outcomes of antithrombotic therapy. The emerging theme of delayed recurrence},
	journal = {Arch. Intern. Med.},
	volume = {157},
	number = {20},
	year = {1997},
	month = {Nov},
	pages = {2317{\textendash}2321},
	author = {Hull, R. D. and Raskob, G. E. and Brant, R. F. and Pineo, G. F. and Valentine, K. A.}
}
