Wireless reverse phone call lookup

Since 1993, has the Federal government conducted any research itself, received any research data from the WTR, or received any outside research results, that serve to reassure the public that portable wireless phones are safe for performing a reverse phone call lookup?  Despite the gains, wireless phones are still basically used as secondary lines, notes John Salak, editor-in-chief of telephone companies.  Wireless phones are popular because they allow you to stay in contact with friends and family all over the United States.  Wireless phones are being studied as a microwave-related health hazard, and also as a driving impairment which some are comparing to alcohol.