Corrigendum to “Indicators of Quality of Clinical Care for Type 2 Diabetes Patients in Primary Health Care Centers in Qatar: A Retrospective Analysis” - Saleh Attal; Mohamed H. Mahmoud; Muna Taher Aseel; Ady Candra; Paul Amuna; Mohamed Elnagmy; Mostafa Abdallah; Nahed Ismail; Ahmed Hanfy; Dia Albaw; Abdulsalam Albashir; Hisham Elmahdi (International Journal of Endocrinology)