@article {pmid1497392, title = {Optimal therapeutic level of heparin therapy in patients with venous thrombosis}, journal = {Arch. Intern. Med.}, volume = {152}, number = {8}, year = {1992}, month = {Aug}, pages = {1589{\textendash}1595}, author = {Hull, R. D. and Raskob, G. E. and Rosenbloom, D. and Lemaire, J. and Pineo, G. F. and Baylis, B. and Ginsberg, J. S. and Panju, A. A. and Brill-Edwards, P. and Brant, R.} }