1. Australian Centre for Research on Separation Science (ACROSS), School of Physical Sciences-Chemistry, University of Tasmania, Private Bag 75, Hobart, 7001 Tasmania, Australia
2. Pfizer Global Research and Development, Sandwich CT139NJ, U.K.
3. LC Resources, McMinnville, Oregon 97128, United States
4. Thermo Fisher Scientific, Sunnyvale, California 94085, United States