000 00271nam a2200121Ia 4500
003 LDD
040 _cLDD
041 _aen
245 0 _aBritish Medical Jounral
260 _aBMJ Publishing Group Ltd
_bLondon
_c2 Apr-2 Jul,2005
362 _a0
_b7494-7506
942 _2ddc
_cJ
999 _c178985
_d178985