แพงคำไหล ศ. and วัชรวงษ์ไพบูลย์ พ. 2021. Development of a Protocol to Support Opioids Access at Home for End-of-Life Patient, Yangsisurat District, Maha Sarakham Province. Journal of Health Science of Thailand. 30, Supplement 1 (Jun. 2021), S76-S86.