Population profiles associated with severe functional difficulties and disability among 5-17 years-old children in México. - Braverman-Bronstein, Ariela; Barrientos-Gutiérrez, Tonatiuh; de Castro, Filipa; Lazcano-Ponce, Eduardo; Rojas-Martínez, Rosalba; Terán, Vicente (Salud Pública de México, 2017)