Dentist's ally in Supreme Court case withdraws support.
D000571:American Dental Association; D000574:American Medical Association; D003730:Dental Care for Persons with Disabilities / Q000331:legislation & jurisprudence*; D003815:Dentists; D006233:Persons with Disabilities / Q000331:legislation & jurisprudence; D006307:Health Systems Agencies; D006801:Humans; D017758:Infectious Disease Transmission, Patient-to-Professional; D008297:Male; D011287:Prejudice; D016079:Refusal to Treat / Q000331:legislation & jurisprudence*; D014481:United States