000 00342nam a2200109Ia 4500
008 160509s9999 xx 000 0 und d
100 _aBritish Medical Journal
245 _aBritish Medical Journal : 1991 : Volume 303(6793-6805) : Shelf 4.7
260 _bBritish Medical Association
_c1991
300 _a796p.+
650 _aBritish Medical Journal
999 _c5193
_d5193