000 00341nam a2200109Ia 4500
008 160509s9999 xx 000 0 und d
100 _aBritish Medical Journal
245 _aBritish Medical Journal : 1992 : Volume 305(6844-6854) : Shelf 4.7
260 _bBritish Medical Association
_c1992
300 _a784p.
650 _aBritish Medical Journal
999 _c5808
_d5808