1. L. Masucci-Magoulas, I. J. Goldberg, H. Serajuddin, A. R. Tall, Department of Medicine, Columbia University, 630 West 168 Street, New York, NY 10032, USA.
2. C. L. Bisgaier, Department of Vascular and Cardiac Diseases, Parke-Davis Pharmaceutical Research, 2800 Plymouth Road, Ann Arbor, MI 48105, USA.
3. O. L. Francone, Pfizer Inc., Central Research Division, Department of Metabolic Diseases, Eastern Point Road, Groton, CT 06340, USA.
4. J. L. Breslow, The Rockefeller University, Laboratory of Biochemical Genetics and Metabolism, 1230 York Avenue, New York, NY 10021, USA.