Gaceta Sanitaria

Sleep patterns in childhood: a longitudinal assessment from the Generation XXI birth cohort Marta Gonçalves; Ana Rute Costa; Milton Severo; Ana Henriques; Henrique Barros;

ITC EUREST-PLUS Spain: protocol of a prospective longitudinal study of smokers in Spain Marcela Fu; Yolanda Castellano; Olena Tigova; Pete Driezen; Mary E. Thompson; Susan C. Kaai; Anne C.K. Quah; Geoffrey T. Fong; Constantine I. Vardavas; Esteve Fernández;

Alcances de la aleatorización mendeliana para el control de confusores no observables en epidemiología Mónica Ancira-Moreno; Natalia Smith; Héctor Lamadrid-Figueroa;