occupational epidemiology
... that early occupational epidemiology studies established health risk factors for gold and silver miners, chimney sweeps, and workers using asbestos?
... that early <b id="mwQQ"><a href="./Occupational_epidemiology" id="mwQg" rel="mw:WikiLink" title="Occupational epidemiology">occupational epidemiology</a></b> studies established health risk factors for gold and silver miners, <a href="./Chimney_sweep" id="mwQw" rel="mw:WikiLink" title="Chimney sweep">chimney sweeps</a>, and workers using <a href="./Asbestos" id="mwRA" rel="mw:WikiLink" title="Asbestos">asbestos</a>?