1. From the Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Mass (D.K., L.G.M., A.A.M., L.Z., M.L.-I., M.A.P., C.C.L., R.E.P., V.J.D.), and the Department of Physiology, Queen’s University, Kingston, Ontario, Canada (L.G.M.). Dr Kong is currently at the College of Science, Nankai University, People’s Republic of China.