Leiby, D A; Rentas, F J; Nelson, K E et al. (2000) Evidence of Trypanosoma cruzi infection (Chagas' disease) among patients undergoing cardiac surgery. Circulation 102:2978-82 |
Donahue, J G; Munoz, A; Ness, P M et al. (1992) The declining risk of post-transfusion hepatitis C virus infection. N Engl J Med 327:369-73 |