7Laith Alrubaiy, Hayley A Hutchings,John G Williams,et al. Assessing patient reported outcome measures:Apractical guide for gastroenterologists[J].United EuropeanGastroenterology Journal,2014,2(6): 463-470.
8Tack J,Muller-Lissner S,Stanghellini V,et al.Diagnosisand treatment of chronic constipation a European per -spective[J].Neurogastroenterol Motil,2011,23(8):697-710.
9Nymn DC,Pemberton JH.llstrup DM,et al.Long-term re-sults of surgery for chronic constipation [J].Dis ColonRectum,1997,40 (3):273-279.
10Nylund G,Oresland T,Fasth S. et al. Long -termoutcome after colectomy severe idiopathic constipation[J].Colorectal Dis, 2001,3(4):253-258.