Relationship between sleep problems and headaches among adolescents: Pelotas 2004 Birth cohort - Bierhals, I. O.; Oliveira, G. S. P. de; Santos, I. S.; Halal, C. S.; Tovo-rodrigues, L.; Manitto, Alicia Matijasevich; Barros, F. C. (Sleep Medicine: X, 2023)