Retraction of publications: a study of biomedical journals retracting publications based on impact factor and journal category Isabel Campos-Varela, Ramón Villaverde-Castañeda, Alberto Ruano-Raviña

HEIRES questionnaire: ensuring equality in health research Cristina Rius, Rut Lucas-Domínguez

Quality of pharmaceutical advertising and gender bias in medical journals (1998-2008): a review of the scientific literature Belén Cambronero Saiz, María Teresa Ruiz Cantero, Natalia Papí Gálvez