Iftikhar, U., N. Choudhary, A. Asghar, B. Bashir, F. J. Ahmad, and M. Nadeem. “Correlation of Insulin-Like Growth Factor With Acne Severity”. Annals of Punjab Medical College, Vol. 11, no. 4, Dec. 2017, pp. 328-32, doi:10.29054/apmc/2017.187.