000 00290nam a2200097Ia 4500
008 220809s1994 xx 000 0 und d
041 _aeng
245 _aBritish Medical Journal No.6933-6945 April -June 1994
260 _aLondon
_bBristish Medical Association
_c1994
520 _aBack Volume
999 _c159686
_d159686