Epidemiological investigation of radiological effects in high background radiation areas of Yangjiang, China.

Epidemiological investigation of radiological effects in high background radiation areas of Yangjiang, China.

An epidemiological investigation of mutational diseases in the high background radiation area of Yangjiang, China.

High background radiation area/Mutation-based diseases/Cancer mortality/Down's syndrome Data from the epidemiological investigation on mutation-based diseases in the High Background Radia tion Area (HBRA) of Yangjiang, China, were analyzed. Although the gamma exposure level in the HBRA is three times that of the Control Area (CA) and about ninety percent of the families in the HBRA have lived t...

Cancer and non-cancer epidemiological study in the high background radiation area of Yangjiang, China

The major objective of this study is to examine cancer mortality risk associated with lowlevel radiation exposure occurring in the high background radiation area (HBRA) in Yangjiang of Guangdong Province, China. The average annual effective doses received by the inhabitants from natural sources of external and internal exposures in HBRA are estimated to be 2.10 and 4.27 mSv, respectively, and t...

An introductory overview of the epidemiological study on the population at the high background radiation areas in Yangjiang, China.

The epidemiological study on the residents of the high background radiation areas in Yangjiang, China was started by Chinese scientists in 1972 and continued until 1986. In 1991, Japanese scientists recognized the importance of the work and a joint feasibility study was conducted with revised protocols. The feasibility study matured to a cooperative project involving both Chinese and Japanese s...

Cancer mortality in the high background radiation areas of Yangjiang, China during the period between 1979 and 1995.

The objective of the present study was to estimate cancer risk associated with the low-level radiation exposure of an average annual effective dose of 6.4 mSv (including internal exposure) in the high background-radiation areas (HBRA) in Yangjiang, China. The mortality survey consisted of two steps, i.e., the follow-up of cohort members and the ascertainment of causes of death. The cohort membe...