Parent attitudes toward participation of their children in polio vaccine trials.
D001290:Attitude; D002648:Child; D006801:Humans; D010290:Parents; D011051:Poliomyelitis / Q000517:prevention & control*; D014611:Vaccination; D014612:Vaccines
D014612:Vaccines
PARENTS; POLIOMYELITIS/prevention and control; VACCINES AND VACCINATION