title: Letter response.
authors: Duke Clinical Research Institute, Durham, NC; Division of Cardiology, Duke University Medical Center, Durham, NC. Electronic address: sreekanth.vemulapalli@duke.edu.
authors: Sreekanth
authors: S
authors: Vemulapalli
authors: Duke Clinical Research Institute, Durham, NC.
authors: Rowena J
authors: RJ
authors: Dolor
authors: Duke Clinical Research Institute, Durham, NC.
authors: Manesh R
authors: MR
authors: Patel
authors: Duke Clinical Research Institute, Durham, NC.
authors: W Schuyler
authors: WS
authors: Jones
mesh_terms: D005081:Exercise Therapy / Q000379:methods*; D006801:Humans; D007383:Intermittent Claudication / Q000628:therapy*