Vaccine
Volume 36, Issue 14  Pages 1801-1916 (27 March 2018)
https://www.sciencedirect.com/journal/vaccine/vol/36/issue/14

Immunization education for internal medicine residents: A cluster-randomized controlled trial
Original research article
Pages 1823-1829
Jennifer A. Whitaker, Caroline M. Poland, Thomas J. Beckman, John B. Bundrick, … Gregory A. Poland