000 00258 a2200109 4500
005 20220511083500.0
022 _a1044 3983
245 _aEpidemiology Journal
260 _aWashington
_bLippincott Williams & Wilkins
_c1995
490 _vVol. 6
942 _2lcc
_cCR
999 _c22263
_d22263