Orawongphaisal, Suyada, Chongjit Saneha, Autchariya Poungkaew, and Khrongwong Musikatavorn. “The Effect of Concreate-Objective Informational Support Program via Smartphone Application on Anxiety Among Relatives of Urgent Patients in Emergency Room”. Nursing Science Journal of Thailand 41, no. 3 (June 30, 2023): 34–49. Accessed May 21, 2024. https://he02.tci-thaijo.org/index.php/ns/article/view/255394.