@phdthesis{oai:nagoya.repo.nii.ac.jp:00020134,
 author = {Ikeuchi, Kazuma and 池内, 一磨},
 month = {Mar},
 school = {名古屋大学, Nagoya University},
 title = {Epidemiology of nontraumatic osteonecrosis of the femoral head in Japan},
 year = {2015}
}