Farooq, Muhammad, Saleem, Sheraz, Niaz, Zafar, Rafique, Qamar, AND Abaidullah, Sajid. " The Study of FEV1, FVC and FEV1/FVC in Type 1 Diabetes Mellitus and their Correlation with Duration of Type 1 Diabetes Mellitus" Annals of King Edward Medical University [Online], Volume 23 Number 3 (21 September 2017)