Application of the Parent Attitudes about Childhood Vaccines (PACV) survey in three national languages in Switzerland: Exploratory factor analysis and Mokken scale analysis. - Olarewaju VO; Jafflin K; Deml MJ; Zimmermann C; Sonderegger J; Preda T; Staub H; Kwiatkowski M; Kloetzer A; Huber BM; Merten S; Tarr PE (Human vaccines & immunotherapeutics, 2021)