Magnitude of undernutrition and determinant factors among adult patients with tuberculosis on follow-up care at public healthcare facilities in South Ethiopia Region: a multicentre cross-sectional study

埃塞俄比亚南部地区公立医疗机构接受随访治疗的成年结核病患者营养不良程度及其决定因素：一项多中心横断面研究