Setting up a nurse-led model of care for management of hypertension and diabetes mellitus in a high HIV prevalence context in rural Zimbabwe: a descriptive study oleh Marthe Frieden, Blessing Zamba, Nisbert Mukumbi, Patron T. Mafaune, Brian Makumbe, Elizabeth Irungu, Virginia Moneti, Petros Isaakidis, Daniela Garone, Madhu Prasai