PBS ; a production of KERA ; produced in association with Once TV-Mexico City ; produced by Andrea Boardman, Ginny Martin, Rob Tranchin ; written by Rob Tranchin ; directed by Ginny Martin
produced by Michael Kirk ; produced and reported by Jim Gilmore ; written and directed by Michael Kirk ; a Frontline co-production with Kirk Documentary Group, Ltd. ; WGBH Educational Foundation ; WGBH Boston