000 00334nam a2200133Ia 4500
008 220729s2021 xx 000 0 und d
041 _aeng
100 _aMark Feldman
245 _aSlelsenger and fordtrans gastrointestinal and liver disease
250 _a11
260 _aNew York
_bElsevier
_c2021
300 _a1127
440 _v1
999 _c138928
_d138928