1 Department of Pediatrics, David Geffen School of Medicine at UCLA (A Schickedanz and P Szilagyi), University of California, Los Angeles, Calif. Electronic address: Aschickedanz@mednet.ucla.edu.
2 Department of Family & Community Medicine (L Gottlieb), University of California, San Francisco, Calif.
3 Department of Pediatrics, David Geffen School of Medicine at UCLA (A Schickedanz and P Szilagyi), University of California, Los Angeles, Calif.