Nasir Umar
发表
Antoinette Bhattacharya,
Elizabeth Allen,
Nasir Umar,
2020
.
Nasir Umar,
Musa Adamu Aliyu,
Umar Dankade,
2014
.
Nasir Umar,
David Litaker,
W. Peitsch,
2012,
BMC Health Services Research.