Compliance with multiple-dose vaccine schedules among older children, adolescents, and adults: results from a vaccine safety datalink study. - Nelson JC; Bittner RC; Bounds L; Zhao S; Baggs J; Donahue JG; Hambidge SJ; Jacobsen SJ; Klein NP; Naleway AL; Zangwill KM; Jackson LA (American Journal of Public Health, 2009)