Prevalence and determinants of parental refusal of human papillomavirus vaccination in Morocco: A multicenter cross-sectional study - Touria Essayagh; Meriem Essayagh; Kaoutar Nmila; Housnia Slibani; Soukayna El Hachimi; Mustapha El Boukhari; Hajar Lemriss; Sanaâ Lemriss; Rehmatullah Zadran; Halima Tigaidi; Sanah Essayagh (PLoS ONE, 2026)