1. Low doses of heparin in prevention of deep vein thrombosis;Kakkar, VV, Field; ES, Nicolaides; AN, Flute; PT, Wessler; S, Yin; E.T.;Lancer,1971
2. Plasma heparin: a unique, submicrogram sensitive assay;Yin, E.T.; Wessler, S.; Butler, J.;J Lab Med,1973
3. APRIL 1985 units were isolated; this is of doubtful importance and laboratory contamination could not be excluded. The same phial was sterile on subsequent reculturing. No other important growth was obtained and clinical evidence of infection was absent
4. Re-use of plastic insulin syringes;Allwood, M.I.C.;Lancer,1983
5. Safety of reusing disposable plastic insulin syringes;Collins, B.J.; Richardson, S.G.; Spence, B.K.;Lancet,1983