000 00270nam a2200097Ia 4500
008 220809s2001 xx 000 0 und d
041 _aeng
245 _aGastroenterology Clinics of North America: Vol.30, No.4, 2001
260 _aLondon
_bWBS
_c2001
520 _aBack Volume
999 _c161788
_d161788