1. Solid State Sciences, Global Pharmaceutical R&D, Abbott Laboratories, North Chicago, Illinois 60064, Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, Structural Chemistry, Global Pharmaceutical R&D, Abbott Laboratories, Abbott Park, Illinois 60064, Microscopy Group, Global Pharmaceutical R&D, Abbott Laboratories, Abbott Park, Illinois 60064, and Solid State Chemistry, Global Pharmaceutical R&D, Abbott Laboratories, North Chicago, Illinois 60064