Efficacy of gamification-based smartphone application for weight loss in overweight and obese adolescents: study protocol for a phase II randomized controlled trial

Patrick Timpel, Fernando Henpin Yue Cesena, Christiane da Silva Costa, Matheus Dorigatti Soldatelli, Emanuel Gois, Eduardo Castrillon, Lina Johana Jaime Díaz, Gabriela M. Repetto, Fanah Hagos, Raul E. Castillo Yermenos, Kevin Pacheco-Barrios, Wafaa Musallam, Zilda Braid, Nesreen Khidir, Marcela Romo Guardado, Roberta Muriel Longo Roepke