More Groups
Fewer Groups
More People
Fewer People
More Years
Fewer Years
Halpern, N. A. Journal of Critical Illness (2002)
Armstrong, D. AIDS Reader (2001)
Pastores, S. M.; Halpern, N. A. Journal of Critical Illness (2000)
Halpern, N. A.; Pastores, S. M.; Price, J. B.; Alicea, M. Journal of Critical Illness (1999)