title: Time-of-measurement effects in longitudinal studies.
mesh_terms: D000367:Age Factors; D000368:Aged; D002318:Cardiovascular Diseases / Q000097:blood; D002784:Cholesterol / Q000097:blood; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D008962:Models, Theoretical; D012306:Risk; D013995:Time; D013997:Time Factors
chemical_list: D002784:Cholesterol