1. Environmental NMR Center, Department of Physical and Environmental Science, University of Toronto, 1265 Military Trail, Toronto, Ontario M1C 1A4, Canada
2. Bruker BioSpin GmbH, Rudolf-Plank-Str. 23, 76275 Ettlingen, Germany
3. Synex Medical, 2 Bloor Street E, Suite 310, Toronto, Ontario M4W 1A8, Canada