1. Maternal and Child Health Sciences (R.H., J.S., C.D.), Scotland, United Kingdom
2. Department of Internal Medicine (H.v.T., T.J.V.), Erasmus University Medical School, 3000 DR Rotterdam, The Netherlands
3. Nuclear Medicine Service (S.Y.W.), Veterans Affairs Medical Center, University of California–Irvine Medical Center, Long Beach, California 90822-5201
4. Community Health Sciences (F.L.R.W.), University of Dundee, Dundee DD1 9SY, Scotland, United Kingdom