Kaewsiri, Prapairat, Penpak Luk-in, Nuttaya Onpiw, and Phayom Sinthusiri. 2022. “The Effectiveness of Using an Estimated Fetal Weight Measuring Tape Innovation With a Nutrition Promotion Program on Weight Gain During Pregnancy and Birth Weight of Pregnant Women With Low Pre-Pregnancy Body Mass Index”. Journal of The Royal Thai Army Nurses 23 (1):323-32. https://he01.tci-thaijo.org/index.php/JRTAN/article/view/250571.