Lamucene OB, Bernales M, Vargas LI, Lagunas LF. Perceptions of barriers and facilitators to implement programs for prevention of mother-to-child transmission of HIV-Mozambique. Rev. Esc. Enferm. USP. 2022;56:e20210353. doi:10.1590/1980-220X-REEUSP-2021-0353