Ronald H. Gray

Placental membrane inflammation and risks of maternal-to-child transmission of HIV-1 in Uganda.

R. Gray, F. Wabwire-mangen, A. Saah, 1999, Journal of acquired immune deficiency syndromes.

Levels and determinants of early neonatal mortality in Natal, northeastern Brazil: results of a surveillance and case-control study.

R. Gray, L. F. de Melo, E. M. Ferraz, 1991, International journal of epidemiology.

Effect of continuing or stopping smoking during pregnancy on infant birth weight, crown-heel length, head circumference, ponderal index, and brain:body weight ratio.

R. Gray, A. Herman, A. Lindley, 2000, American journal of epidemiology.