title: Low HDL-cholesterol in principal investigators?
mesh_terms: D002784:Cholesterol / Q000097:blood*; D008076:Cholesterol, HDL; D005500:Follow-Up Studies; D006801:Humans; D006951:Hyperlipoproteinemias / Q000453:epidemiology* / Q000517:prevention & control; D008075:Lipoproteins, HDL / Q000097:blood*; D009784:Occupational Diseases / Q000453:epidemiology*; D012106:Research
chemical_list: D008076:Cholesterol, HDL; D008075:Lipoproteins, HDL; D002784:Cholesterol