CHICAGO–(BUSINESS WIRE)–The American Dental Association Foundation announces the 21st year of its Give Kids A Smile (GKAS) program, which officially launches today at this yearās national kick-off event in St. Louis, MO where the program first began. Since its national launch in 2003, GKAS volunteers have provided free oral health education and services to more than seven million underserved children in the U.S. To learn more about the programās impact on helping improve oral health and total