Nitiapinyasakul, Nuttachai, and Achara Nitiapinyasakul. “Training Program and Developmental Guidelines for Screening Patients at Risk for Diabetic Retinopathy at the Community Hospitals, Nakhon Ratchasima Province”. Maharat Nakhon Ratchasima Hospital Journal 24, no. 2 (October 22, 2024): 69–82. accessed June 12, 2025. https://he04.tci-thaijo.org/index.php/MNRHJ/article/view/2236.