European General Practice Research Network (EGPRN). (September 2014) - Valderas, José M.; Orozco-Beltran, Domingo; Bolíbar, Bonaventura; Guiriguet, Carolina; Vela, Carme; Rivero, Irene; Vilarrubí, Mercedes; Buron, Andrea; Muñoz, Laura; Walters, Kate; Kharicha, Kalpa; Goodman, Claire; et al.