HOFFMAN, PN. Needlestick and Needleshare ; The Difference. J Infect Dis. 1989, 160, 545
NAPOLI, VM. How Much Blood is in a Needlestick?. J Infect Dis. 1987, 155, 828
MARCUS, R. Surveillance of health care workers exposed to blood from patients infected with the human immunedeficiency virus. N Engl J Med. 1988, 319, 1118-1123