Comparison of the information provided by electronic health records data and a population health survey to estimate prevalence of selected health conditions and multimorbidity. - Violán, Concepción; Foguet-Boreu, Quintí; Hermosilla-Pérez, Eduardo; Valderas, Jose M.; Bolíbar, Bonaventura; Fàbregas-Escurriola, Mireia; Brugulat-Guiteras, Pilar; Muñoz-Pérez, Miguel Ángel (BMC Public Health, 2013)