Ohtsuka, Mikio, Matsumura Natsuko, and Yamamoto Toshiyuki. 2016. “Sarcoidal Granuloma Presenting on Tattoo: A Report of a Japanese Female Patient and a Review of Japanese Published Work”. Sarcoidosis, Vasculitis and Diffuse Lung Diseases 33 (1): 83-89. https://mail.mattioli1885journals.com/index.php/sarcoidosis/article/view/4246.