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Ng J and Orav EJ. A generalized chain binomial model with application to HIV infection. Math Biosciences, 1990, 101:99-119.

Orav EJ, Louis TA, Palmer RH, and Wright EA. Variance components and their implications for statistical information in medical data. Statistics in Medicine, 1991, 10:599-616.

Lipshultz SE, Orav EJ, Sanders SP, Hale AR, McIntosh K, and Colan SD. Cardiac structure and function in children with HIV infection treated with zidovudine. New England Journal of Medicine, 1992, 327:1260-1265.

Weiner HL, Mackin GA, Matsui M, Orav EJ, Khoury SJ, Dawson DM, and Hafler DA. Double-blind trial of oral tolerization with myeline antigens in multiple sclerosis. Science, 1993, 259:1321-1324.