1. Department of Biomedical Informatics and Medical Education, School of Medicine, University of Washington, Seattle, Washington, USA
2. Department of Civil and Environmental Engineering, College of Engineering, University of Washington, Seattle, Washington, USA
3. Department of Family Medicine, School of Medicine, University of Washington, Seattle, Washington, USA
4. Department of Computer Science, University of Puerto Rico Recinto de Río Piedras, San Juan, Puerto Rico, USA