Authors: Marta Vilaró; Jordi Cortés; Albert Selva-O'Callaghan; Agustín Urrutia; Josep-Maria Ribera; Francesc Cardellach; Xavier Basagaña; Matthew Elmore; Miquel Vilardell; Douglas Altman; José-Antonio González; Erik Cobo Journal: BMC Med Res Methodol Date: 2019-05-31 Impact factor: 4.615