Are Cell Phone Antennas on Apartment Buildings Safe?

Are Cell Phone Antennas on Apartment Buildings Safe?
http://www.magdahavas.com/2010/02/17/are-cell-phone-antennas-on-apartment-buildings-safe/

"In December 2009 an array of cell phone antennas was placed on an apartment building in downtown Toronto, much to the surprise of the residents who first became aware of this construction as the cranes moved in.  Watch the video and listen to what one woman experienced."