[1] Hosp Santa Maria, Gastrenterol, Lisbon, Portugal
[2] Fac Med Lisbon, Lab Nutr & Metab, Lisbon, Portugal
[3] CHUC, Med Interna, Coimbra, Portugal
[4] INSA, Lisbon, Portugal
[5] CHVNG, Gastrenterol, Vila Nova De Gaia, Portugal
[6] CHA, Gastrenterol, Faro, Portugal
[7] HES, Gastrenterol, Evora, Portugal