000 00342nam a2200109Ia 4500
008 160509s9999 xx 000 0 und d
100 _aBritish Medical Journal
245 _aBritish Medical Journal : 1989 : Volume 299(6704-6714) : Shelf 4.7
260 _bBritish Medical Association
_c1989
300 _a1628p.
650 _aBritish Medical Journal
999 _c4865
_d4865