Assessment of vitamin A status of preschool children in a sub-Saharan African setting: comparative advantage of modified relative-dose response test.
Samba
C
C
Department of Tropical Medicine, Hôpital Saint-André, University Hospital Center of Bordeaux, University Victor Segalen Bordeaux 2, F-33076 Bordeaux, France. claude.samba@wanadoo.fr
Gourmel
B
B
Houze
P
P
Malvy
D
D