Struggles for provision of palliative care services at the primary healthcare setting in Tanzania; Experiences from health facility in-charges in Dar es Salaam; A qualitative study - Christina Vallen Malichewe; Furahini Yoram; Juda Lyamai; Veronica Mkusa; George Kiwango; Obadia Nyongole; Nathanael Sirili (PLoS ONE, 2026)