Sanli, H., Ekmekci, P., Kusak, F., Arat, M., & Beksaç, M. (2003). Hyperkeratosis of the nipple associated with chronic graft versus host disease after allogeneic haematopoietic cell transplantation. Acta Dermato-Venereologica, 83(5), 385–386. https://doi.org/10.1080/00015550310012665