[1] Univ Washington, Dept Med, Cardiovasc Hlth Res Unit, Seattle, WA 98195 USA
[2] Univ Washington, Dept Epidemiol, Cardiovasc Hlth Res Unit, Seattle, WA USA
[3] Univ Washington, Cardiovasc Hlth Res Unit, Dept Med, Seattle, WA USA
[4] Univ Washington, Cardiovasc Hlth Res Unit, Dept Epidemiol, Seattle, WA USA