000 00297nam a2200121Ia 4500
008 251112s9999||||xx |||||||||||||| ||und||
040 _aCNCLSA
245 0 _aB M J
260 _cmarch 30, 2002
_bThe British Medical Association
_aLondon
300 _aP. 747-1592
300 _bV. 323
942 _cJRBV
999 _c18777
_d18777