"Dr. Chesney"@en . . . . . "GA: 1"@en . . . . "Dr. Chesney"@en . . "Dr. Chesney is a doctor who was an expert in the use of bovine valves instead of porcine valves."@en . . . . . . . "Dr. Chesney is a doctor who was an expert in the use of bovine valves instead of porcine valves."@en . . "M.D."@en . . "Alive"@en . .