Original Article
Copyright ©2012 Baishideng.
World J Gastrointest Oncol. Jul 15, 2012; 4(7): 170-175
Published online Jul 15, 2012. doi: 10.4251/wjgo.v4.i7.170
Figure 1
Figure 1 The location of the three prefectures. Akita represents the northern part of Japan, while the Kochi prefecture on Shikoku Island was obstructed from communication with other prefectures by the Shikoku mountain (dotted line) range in ancient times. Yamaguchi is one of the nearest prefectures to the Korean Peninsula in Japan.