Training health workers and community influencers to be Vaccine Champions: a mixed-methods RE-AIM evaluation oleh Monsurul Hoq, Julie Leask, Jessica Kaufman, Michelle Dynes, Yasmin Mohamed, Margie Danchin, Holly Seale, Jemesa Tudravu, James Fong, Isabella Overmars, Kylie Jenkins, Rachel Devi, Litiana Volavola, Luisa Vodonaivalu, Kshitij Joshi, Halitesh Datt, Sonya Sagan