Hagiwara , Yoshihiro, Masahito Hatori, Akifumi Abe, Kentaro Tanaka, and Shoichi Kokubun. 2009. “Periosteal Chondroma of the Fifth Toe – A Case Report”. Upsala Journal of Medical Sciences 109 (1):65–70. https://doi.org/10.3109/2000-1967-112.