This study was funded by a grant (RO1GM107782-01) provided by the National Institute of General Medical Sciences. We are grateful to the members of the advisory board and stakeholders who graciously shared their expert advice. We also deeply appreciate the Graduate Study Division, School of Medicine, and School of Nursing at UCSF for their support and assistance in this project. A special note of thanks to the study participants for their enthusiastic participation in the various aspects of this study.