Changes in the concentrations of biochemical indicators of diet and nutritional status of pregnant women across pregnancy trimesters in Trujillo, Peru, 2004-2005. - Horton DK; Adetona O; Aguilar-Villalobos M; Cassidy BE; Pfeiffer CM; Schleicher RL; Caldwell KL; Needham LL; Rathbun SL; Vena JE; Naeher LP (Nutrition journal, 2013)