1. Department of Medicine (J.C., K.E.C., D.N., T.B., U.B., M.W., J.-M.L., P.C.T., Q.C., V.A.C., H.E.R., A.B.G., I.R.R.), University of Auckland, Auckland 1001, New Zealand
2. Fonterra Research Centre (K.P.P., N.W.H.), Palmerston North 5315, New Zealand
3. Institute of Medical and Veterinary Science (N.F.), Adelaide 5000, Australia
4. School of Biological Sciences (H.M.B., E.N.B.), University of Auckland, Auckland 1001, New Zealand