First of all thank you Fratemate and Kraus.
Do you know how is the radiation affecting to all the population?
I read these reports and I would like to know how long crew has to pass in Japan every month more or less.
Thank you on advance.Here you have the reports
A Tokyo doctor who has moved to western Japan urges fellow doctors to promote radiation protection: A message from Dr. Mita to his colleagues in Kodaira, Tokyo - World Network For Saving Children From Radiation
Japan Radiation Risks: FAQ