Janchai, Nattaphat, and Wannee Deoisres. 2020. “Factors affecting health literacy in hypertensive elder adults: an integrative review”. Thai Journal of Cardio-Thoracic Nursing 31 (1). Bangkok, Thailand:17-26. https://he02.tci-thaijo.org/index.php/journalthaicvtnurse/article/view/243976.