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Article History

Received: 6 November 2021

Accepted: 10 December 2021

First Online: 29 January 2022

Declarations

:

: Carlos H. Orces declares that he has not conflict of interest.

: The study protocol was approved by the National Center for Health Statistics Research Ethics Review Board (study protocol # 2011-17). Study procedures were performed in accordance with the Declaration of Helsinki ethical principles for medical research involving human subjects.

: All participants in the National Health and Nutrition Examination Survey signed an informed consent form prior to the interview and examination components, and to have their blood urine or saliva specimens stored for future studies.