@phdthesis{oai:shiga-med.repo.nii.ac.jp:00002868,
 author = {NAKADA, Yukari},
 month = {Dec},
 note = {Thesis or Dissertation, 平成26年度},
 school = {滋賀医科大学},
 title = {A cross-sectional study on working hours, sleep duration and depressive symptoms in Japanese shift workers.},
 year = {2014}
}