Chaiwong, S., Chaiwong, T., Nunthachai, B., & Sripirom, K. (2018). Fluoride level in plasma blood and urine of first-trimester pregnant women living in a province. Health Science, Science and Technology Reviews, 11(2), 49–51. Retrieved from https://li01.tci-thaijo.org/index.php/journalup/article/view/184739