1.
Monge-Rojas R, Alvarado-Barrantes R, Vargas-Quesada R, Chinnock A. Validity and reliability of a Food Frequency Questionnaire (FFQ) assessing food groups consumption and nutrients intake in Costa Rican adolescents. PSM [Internet]. 2024Jan.1 [cited 2024Nov.21];21(2). Available from: https://revistas.ucr.ac.cr/index.php/psm/article/view/55311