Surrun, S. K., M. T. Ahmad, S. Afzal, B. H. Tan, W. Siriwong, and R. S. Chapman. “The Risk Factors and Clinical Characteristics of Cellulitis: A Hospital-Based Case-Control Study in Singapore”. Journal of Health Research, vol. 23, no. 2, Nov. 2018, pp. 81-86, https://he01.tci-thaijo.org/index.php/jhealthres/article/view/156376.