1. Division for Research and Education in Complementary and Integrative Medical Therapies, Harvard Medical School, Boston, MA.
2. Division of General Medicine and Primary Care, Beth Israel Deaconess Medical Center, Boston, MA.
3. Center for Biomedical Engineering, Massachusetts Institute of Technology, Cambridge, MA.
4. Department of Physics, University of Oslo, Oslo, Norway.
5. Department of Clinical and Biomedical Engineering, Rikshospitalet, Oslo, Norway.