Preventing mercury poisoning in dental practice.
D000368:Aged; D003770:Dental Offices; D003815:Dentists; D006801:Humans; D008297:Male; D008630:Mercury Poisoning / Q000175:diagnosis / Q000517:prevention & control*; D008875:Middle Aged; D009784:Occupational Diseases / Q000175:diagnosis / Q000517:prevention & control*