Karki, Bodh Bikram, Debao Wu, and Jun Shen. 2021. “Sphingosine Kinase 1(SphK1) – A Novel Marker for Cancer Risk Assessment in Oral Premalignancy”. Nepal Medical Journal 4 (1):58-67. http://nmj.com.np/nmj/index.php/nmj/article/view/23.