Kiatchotchai, T. ., and N. Saiphoklang. “Chest Specialists Versus Non-Specialists Following International COPD Recommendations in Real-World Clinical Practice”. Asian Medical Journal and Alternative Medicine, vol. 23, no. 3, Dec. 2023, pp. 9-17, https://asianmedjam.com/index.php/amjam/article/view/1361.