Inpracha, Jitraporn. 2021. “Developing Guidelines for Promoting Breastfeeding in Postpartum Mothers of the Lactation Clinic Chiang Kham Hospital, Phayao Province”. Journal of Nakornping Hospital 12 (2):108-24. https://he01.tci-thaijo.org/index.php/jnkp/article/view/251465.