Validation of the Arabic Version of General Medication Adherence Scale (GMAS) in Sudanese Patients with Diabetes Mellitus oleh Mahmoud MA, Islam MA, Ahmed M, Bashir R, Ibrahim R, Al-Nemiri S, Babiker E, Mutasim N, Alolayan SO, Al Thagfan S, Ahmed SBM, Sales I, Azmi Hassali M, Alahmadi Y, Yousif MA