Doppler sonographic evaluation of peripheral arterial disease and its associated factors among diabetes mellitus patients at Muhimbili National Hospital, Tanzania: A hospital-based cross-sectional study

坦桑尼亚穆希比利国家医院糖尿病患者外周动脉疾病及其相关因素的多普勒超声评估：一项基于医院的横断面研究