@article{oai:niigata-u.repo.nii.ac.jp:00006673,
 author = {Yamamoto, Masaharu and Endoh, Kazuo and Magara, Junko and Watanabe, Masatomo and Takagi, Shuko and Sakai, Hiroshi and Shibuya, Norio and Fujiguchi, Kensuke},
 issue = {2},
 journal = {Acta medica et biologica, Acta medica et biologica},
 month = {Sep},
 note = {The prefectures with higher standardized mortality ratios (SMRs) for biliary tract cancers are areas where rice production is high. Based on this epidemiological finding, we tested the hypothesis of whether or not the use of agricultural chemicals are related to the occurrence of cancers. An ecological correlation analysis between the use of agricultural chemicals (1962-1975) and the SMRs (1985) was made among 46 prefectures. Afterwards, statistically significant associations with SMRs were frequently found in CNP, MCPA and PCNB.},
 pages = {63--68},
 title = {Ecological correlation between the use of agricultural chemicals and biliary tract cancers in Japan},
 volume = {35},
 year = {1987}
}