1. Department of Surgery, Ascension Genesys Hospital, Grand Blanc, MI, USA
2. Michigan State University College of Osteopathic Medicine, East Lansing, MI, USA
3. A.T. Still University Kirksville College of Osteopathic Medicine, Kirksville, MO, USA
4. Department of Infection Control, Ascension Genesys Hospital, Grand Blanc, MI, USA