Sriwichai, Premrudee, Kanjana Sajai, and Jeeranan Saklaw. 2023. “Predicting Factors of Pain and Pain Management Behaviors in Working-age Patients undergoing Major Abdominal Surgery”. Journal of The Royal Thai Army Nurses 24 (2):88-97. https://he01.tci-thaijo.org/index.php/JRTAN/article/view/262692.