[1] Alava Univ Hosp Santiago Apostol, Dept Digest, Vitoria, Spain
[2] Univ Basque Country UPV EHU, Fac Pharm, Dept Pharm & Food Sci, Vitoria, Spain
[3] Univ Basque Country UPV EHU, Fac Pharm, Dept Zool & Cellular Biol, Vitoria, Spain
[4] Alto Deba Hosp, Dept Digest, Osakidetza, Arrasate Mondra, Spain