Ah Cheong, K., and A.-Y. Lee. “Guanine Deaminase Stimulates Ultraviolet-Induced Keratinocyte Senescence in Seborrhoeic Keratosis via Guanine Metabolites”. Acta Dermato-Venereologica, vol. 100, no. 8, Apr. 2020, pp. 1-10, doi:10.2340/00015555-3473.