Affiliation: | From the ‡Medical Research Service, Veterans Affairs San Diego Healthcare System, San Diego, California.;the §Department of Medicine, University of California, San Diego, La Jolla, California 92093-0673.;the ¶University of Hong Kong, Hong Kong, China, and ;the ‖Institute for Genetic Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California 90089 |