1. Saarland University, Department of Biopharmaceutics and Pharmaceutical Technology, Saarbrücken, Germany.
2. Current address: University of Dublin, Trinity College, School of Pharmacy, Dublin, Ireland.
3. University of Southern California, School of Pharmacy, Department of Pharmaceutical Sciences, Los Angeles, CA.
4. Current address; Pfizer Ophthalmics, San Diego, CA.
5. University of Southern California, Schools of Pharmacy, Medicine and Engineering, Will Rogers Institute Pulmonary Research Center and Departments of Medicine, Physiology and Biophysics, Biomedical Engineering, and Molecular Pharmacology and Toxicology, Los Angeles, CA.