Edited sentence: "Apparently, it was the most important role in his life," Sandra "Sand" Brim of Medical Aid for El Salvador told the Associated Press at the time."I know this is going to look like a publicity stunt, but that’s too bad.-based Medical Aid, which was founded by Farrell’s long-time friend and radical activist buddy, actor Ed Asner, flew in the Los Angeles doctor because there was no surgeon available with the skills to perform the delicate operation.Alejandro Sanchez in a real-life operation to restore movement to the arm of Nidia Diaz, a guerilla leader of the Marxist Central American Worker’s Party.Because he needed someone to assist him, Sanchez asked Farrell, who at the time was in Central America at the behest of Amnesty International, for help on the way to the hospital.Diaz is still barred from entering the U.Farrell is counting on the fact that no one remembers another part he played one Friday night, 18 years ago in San Salvador.For 2 ½ hours, Farrell, who played a surgeon on M*A*S*H, assisted Dr.It isn’t," Farrell told the Los Angeles Times after the operation.Just two months before, the group had claimed responsibility for the slaying of four U.Marines, two American businessmen and nine civilians.The U.for her role in the murders