Difficulties in the evaluation of lead poisoning.
D000056:Accident Prevention; D000293:Adolescent; D000328:Adult; D002140:California; D003937:Diagnosis, Differential; D006266:Health Education; D006801:Humans; D006961:Hyperparathyroidism / Q000175:diagnosis; D007855:Lead Poisoning / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000517:prevention & control*