000 00301nam a2200109Ia 4500
008 220809s2012 xx 000 0 und d
041 _aeng
245 _aGastroenterology clinics of North America Vol-41,No-1,Mar-2012,
260 _c2012
520 _aBack Volume
650 _aGastroenterology (616.33)
999 _c165179
_d165179