000 00410nam a2200121Ia 4500
008 160509s9999 xx 000 0 und d
020 _a0002-9262
100 _aThe American Journal of Epidemiology
245 4 _aThe American Journal of Epidemiology : 1993 : Vol. 137(1-6) : Shelf 2.3
260 _bThe School of Hygiene and Public Health
_c1993
300 _a689p.
650 _aThe American Journal of Epidemiology
999 _c5478
_d5478