Vaccination outside the national vaccination plan for children aged 2 to 4 years: factors associated with compliance from the perspectives of the pediatrician and the general practitioner. Rev Port Med Geral Fam [Internet]. 2016 Feb. 1 [cited 2026 Feb. 17];32(1):16-28. Available from: https://rpmgf.pt/ojs/index.php/rpmgf/article/view/11686