[1] Hosp Badalona Germans Trias & Pujol, Barcelona, Spain
[2] Inst Catala Salut, CAP Florida Sud, Barcelona, Spain
[3] Univ Barcelona, Fac Med, Dept Ciencies Clin, Campus Bellvitge, Barcelona, Spain
[4] Com Cient semFYC, Inst Catala Salut, Unitat Suport Recerca IDIAP Jordi Got, Direccio Atencio Primaria Costa Ponent, Barcelona, Spain
[5] IMIM, Neuroenter Translat Sci NETS Grp, Parc Salut Mar PRBB, Barcelona, Spain
[6] Consejeria Sanidad, Subdirecc Gen Calidad Asistencial, Madrid, Spain
[7] Univ Complutense Madrid, Hosp Clin San Carlos, Madrid, Spain
[8] Ctr Med Teknon, Serv Aparato Digest, Inst Trastornos Func & Motores Digest, Barcelona, Spain