Intra-observer reliability of the anthropometric measurements in South American children and adolescents: the SAYCARE Study - Skapino, Estela; Rendo-urteaga, Tara; Miguel-etayo, Pilar de; Estrada-restrepo, Alejandro; Delgado, Carlos Alberto; Araujo-moura, Keisyanne de; Yanaguihara, Erika Yukari; Carvalho, Heraclito Barbosa; Aristizabal, Juan Carlos; Moreno, Luis Alberto (Nutricion hospitalaria, 2019)