Footnotes

• Funding This work was supported by MD000170 P20 funded from the National Center on Minority Health and Health Disparities, and the Centers for Translational Science Award 1U54RR023417-01 from the National Center for Research Resources. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. H-QQ is supported by intramural funding from the University of Texas School of Public Health.

• Competing interests None.

• Ethics approval The ethics approval was provided by the Committee for the Protection of Human Subjects of the University of Texas Health Science Center at Houston.

• Provenance and peer review Not commissioned; externally peer reviewed.

• Data sharing statement The corresponding authors agree to comply with the NIH Data Sharing Policy guidelines. Access to the CCHC biobank containing de-identified data with demographic information and other data and to archived specimens will be available to academic researchers, provided formal requests are submitted and approved by the data sharing committee of the CCHC biobank. Human subject data will be shared within the limits of Health Insurance Portability and Accountability Act and other patient confidentiality requirements.