@phdthesis{oai:tsukuba.repo.nii.ac.jp:00008453,
 author = {Kagami, Masahiro},
 month = {},
 note = {The author owes endless gratitude to many persons who gladly supported him to complete this dissertation. Special appreciation is presented to professor Shozo Yamamoto for his kind advice and help in writing this dissertation. The author also would like to thank ..., 1989},
 school = {筑波大学, University of Tsukuba},
 title = {Geographical study of regional variation of diseases},
 year = {1990}
}