1. Department of Chemistry, Stanford University, Stanford, CA 94305, USA
2. Stanford Center for Innovation in Global Health, Stanford University, Stanford, CA 94305, USA
3. Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
4. Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA