000 00278nam a2200097Ia 4500
008 220809s1999 xx 000 0 und d
041 _aeng
245 _aGastroenterology Clinics of North America Vol.28, No.2, June 1999
260 _bWB Saunders Co
_c1999
520 _aBack Volume
999 _c161168
_d161168