Assessing vitamin status in large population surveys by measuring biomarkers and dietary intake – two case studies: folate and vitamin D

by Pfeiffer, Christine M., Schleicher, Rosemary L., Johnson, Clifford L., Coates, Paul M.
Published 2012

Changes in the concentrations of biochemical indicators of diet and nutritional status of pregnant women across pregnancy trimesters in Trujillo, Peru, 2004–2005

by Horton, D Kevin, Adetona, Olorunfemi, Aguilar-Villalobos, Manuel, Cassidy, Brandon E, Pfeiffer, Christine M, Schleicher, Rosemary L, Caldwell, Kathleen L, Needham, Larry L, Rathbun, Stephen L, Vena, John E, Naeher, Luke P
Published 2013