first official trailer released for 'mile 22' film, starring iko uwais, mark wahlberg .
mrs cavanagh, from foyle park in londonderry, had a complex medical history of chronic heart and renal failure. .
over years of research, scientists discovered that cgrp helps transmit pain signals in the brain. .
derek valenzuela had a tough time coming up with words of gratitude for st. jude staffers. .