Request information on Biological Effects of 50-60Hz(ELF's)fields

[spot1 at monash.edu.au]

Hello .
My name is Stavros Pothoulakis , and I'm a final year engineering student. I'm 
currently doing a project which is investigating the possible human/biological 
effects that ELF & VLF (ie 50-60 Hz) fields have. I would greatly appreciate 
any information, or directions to finding such information.

Thank you very much.