Vaccines: no longer kid stuff.
Singer
I D
ID
NOVA HealthCare Group, Herndon, VA.
D000328:Adult; D000368:Aged; D003362:Cost-Benefit Analysis; D006801:Humans; D008875:Middle Aged; D011314:Preventive Health Services / Q000191:economics*; D014481:United States; D014611:Vaccination / Q000191:economics*