1. Department of NeurosciencesRoche Institute of Molecular BiologyRoche Research CenterNutleyNew Jersey07110USA
2. The Hanson Centre for Cancer ResearchInstitute of Medical and Veterinary ScienceRundle Mall Post Office Box 14AdelaideSA5000Australia
3. Division of Otolaryngology‐Head and Neck SurgeryDepartment of Surgery, and Sanders‐Brown Center on AgingUniversity of KentuckyCollege of MedicineLexingtonKentucky40536USA
4. Hoffmann‐La Roche, Inc.Peptide Research DepartmentNutleyNew Jersey07110USA
5. Department of Physiology and BiophysicsUniversity of Kentucky College of MedicineLexingtonKentucky40536USA