000 00277 a2200109 4500
005 20220602033847.0
022 _a00175749
245 _aJournal of British society of gastrornterology
260 _aLondon
_bBritish medical association
_c1989
490 _vVol.30
942 _2lcc
_cCR
999 _c26647
_d26647