The combined used of quantitative and qualitative longitudinal methods in the study of obesity Cecilia Díaz-Méndez, Jean Adams

Population-based versus hospital-based controls: are they comparable? Alberto Ruano-Ravina, Mónica Pérez-Ríos, Juan Miguel Barros-Dios

Risky alcohol use and heavy episodic drinking among Spanish University students: a two-year follow-up Nayara Mota, Alvarez-Gil, Montserrat Corral, Rodriguez-Holguin, María Parada, Alberto Crego, Caamano-Isorna, Fernando Cadaveira