Design of a multi-component controlled randomized community study for obesity prevention in school children: Research protocol - Cespedes, Laura Gonzalez; Fretes, Gabriela; Rios, Patricia; Estigarribia, Gladys; Viveros, Guiomar; Aguilar, Gloria; Joy, Laura; Pizarro, Fernando; Bangdiwala, Shrikant (Revista Española de Nutricion Humana y Dietetica, 2020)