> I agree with Andrew Karam's values regarding the HBRA in China. The article I saw had 5.47 mSv and 2.07 mSv for HBRA and CA from the Chinese study. M. Jo ======================================================== Myung Chul Jo, RSO EH & S Mail Stop 328 University of Nevada Reno Reno, Nevada 89557 (702)784-4540 (702)784-4553 fax