- Only individuals (aged 18 or over) who can understand and give informed consent will be eligible to participate in this study. Individuals who are considered to be mentally disabled will not be recruited for this study. All subjects must be able to give informed consent. We will not be using specific methods to assess decisional capacity. Economically disadvantaged persons will not be vulnerable to undue influence, as this study offers no compensation. All individuals will be told that their choice regarding study participation will in no way change their access to clinical care. This should negate any undue influence or coercion. Children, fetuses, neonates, or prisoners are not included in this research study.