1. University of Birmingham Institute of Metabolism and Systems Research and Birmingham Health Partners Centre for Endocrinology, Diabetes and Metabolism, Birmingham, United Kingdom (Y.S.E., A.P., M.W.O., W.A.)
2. Evidence-based Practice Center, Mayo Clinic, Rochester, Minnesota (F.A., D.A.D., A.K., M.H.M., I.B.)
3. Mayo Clinic, Rochester, Minnesota; Mayo Clinic Libraries, Mayo Clinic, Rochester, Minnesota (L.P.)