Aphisamacharayothin, Phitsanu, Supang Wattanasoei, and Kasama Pooseesod. 2026. “Core Competencies, Challenges, and Predictive Factors in Health Service Management: A Study of Transferred Sub-District Health Promoting Hospitals in Phitsanulok”. Journal of Population and Social Studies [JPSS] 35 (-):177-96. https://so03.tci-thaijo.org/index.php/jpss/article/view/297681.