Dameria, Flora, et al. “Liver Metastasis of Malignant Pilomatrixoma: Devastating Outcome from A Possibly Under-Treated Case”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy, vol. 21, no. 2, Sept. 2020, pp. 162-7, doi:10.24871/2122020162-167.