**ADDS CREDIT AND SUSPECT INFORMATION** Dr. Dennis Sandlin is seen in an undated photo. Sandlin, 57, was shot and killed Tuesday, Dec. 8, 2009 while at Leatherwood-Blackey Medical Clinic in rural sotheastern Kentucky, where he’d worked for nearly two decades. John Combs, 46, charged with the murder, pleaded not guilty Wednesday, Dec. 9, 2009. (AP Photo/The Mountain Eagle)