Knowledge, Attitudes, and Practices towards Diabetic Retinopathy among Primary Care Physicians of Saudi Arabia: A Multicenter Cross-Sectional Study oleh Ashokkumar Thirunavukkarasu, Abdulmohsen Khaled Almulhim, Faisal Ahmed Albalawi, Ziyad Muharib Alruwaili, Ola Ali Almajed, Sultan Hamoud Alruwaili, Malek Mohammed Almugharriq, Abdulaziz Saud Alruwaili, Malak Khalid Alkuwaykibi