1. Berkeley Synchrotron Infrared Structural Biology Program, Lawrence Berkeley National Laboratory, University of California, Berkeley, CA, USA
2. Department of Radiology and Pediatrics/Molecular Imaging Program at Stanford, Stanford, CA, USA
3. Laboratory for Nutrition and Vision Research, Jean Mayer USDA HNRCA at Tufts University, Tufts University, Boston, MA, USA
4. Boston Medical Center, Boston University School of Medicine, Boston, MA, USA