000 00272nam a2200109Ia 4500
008 201224s9999||||xx |||||||||||||| ||und||
100 _aCousens,S.N.
_94328
245 0 _aCase-Control studies of common childhood diseases
260 _bWHO
_c1995
500 _a134
942 _cBK
999 _c8719
_d8703