Olivencia-Palomar Pilar, Avila-Nasi Susana, González-Soler Roberto, Castro Elena, López-Rosés Leopoldo
Department of Digestive Disease, Hospital Xeral-Calde, Lugo, Spain.
Rev Esp Enferm Dig. 2012 Feb;104(2):88-9. doi: 10.4321/s1130-01082012000200007.