On Oct. 3, Triangle hospitals took a big step to keep the health of patients, employees and visitors from going up in smoke: In a joint statement, Duke Medicine, UNC Health Care, Rex and WakeMed all declared their intentions to make their campuses 100 percent tobacco free by July 4, 2007.At Duke, this will mean that there will be no smoking or tobacco use in or around buildings owned or sole-leased by the School of Medicine, the School of...