Population mortality before and during the COVID-19 epidemic in two Sudanese settings: a key informant study oleh Rahaf AbuKoura, Francesco Checchi, Omama Abdalla, Omnia Ibrahim, Ahmed Tom Hemeadan, Ahmed Ali Ahmed Eldirdiri, Direeg Ismail Mohamed, Aljaile Ahmed, Abd Elhameed Ahmed, Nada Abdelmagid, Pasquale Pepe, Maysoon Dahab