00297nam a2200109Ia 4500008004100000022001400041040001100055245004000066260005700106300001400163300001000177251112s9999||||xx |||||||||||||| ||und||  a0028-4793  aCNCLSA 4aThe New England Journal of Medicine  cJanuary 2, 2003bMassachusetts Medical SocietyaU.K.  aP. 1-1304  bV.220