000 00341nam a2200109Ia 4500
008 160509s9999 xx 000 0 und d
100 _aBritish Medical Journal
245 _aBritish Medical Journal : 1989 : Volume 298(6690-6701) : Shelf 4.7
260 _bBritish Medical Association
_c1989
300 _a870p.
650 _aBritish Medical Journal
999 _c4864
_d4864