P. Connor

发表

Double blind, cluster randomised trial of low dose supplementation with vitamin A or β carotene on mortality related to pregnancy in Nepal

A. Sommer, J. Katz, S. Khatry, 1999, BMJ.

Double blind, cluster randomised trial of low dose supplementation with vitamin A or βcarotene on mortality related to pregnancy in Nepal

A. Sommer, J. Katz, S. Khatry, 1999 .