000 00278nam a2200121Ia 4500
003 LDD
040 _cLDD
041 _aen
245 0 _aBritish Medical Jounral
260 _aLondon
_bBMJ Publishing Group Ltd
_c1 Mar-30 Apr,1996
362 _a312-312
_b7030-7038
942 _2ddc
_cJ
999 _c191694
_d191694