Serum retinol of Chadian nomadic pastoralist women in relation to their livestocks' milk retinol and beta-carotene content

Zinsstag J, Schelling E, Daoud S, Schierle J, Hofmann P, Diguimbaye C, Daugla DM, Ndoutamia G, Knopf L, Vounatsou P, Tanner M. Serum retinol of Chadian nomadic pastoralist women in relation to their livestocks' milk retinol and beta-carotene content. Int J Vitam Nutr Res. 2002; 72(4): 221-8.