1 Barbra Streisand Women's Heart Center, Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California. Electronic address: merz@cshs.org.
2 New York-Presbyterian/Weill Cornell Medical Center, New York, New York.
3 Barbra Streisand Women's Heart Center, Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California.