“…19 Research engagement with immigrants is quite challenging owing to mistrust of medical professionals, power differentials between researchers and participants, difficulty penetrating isolated communities, language barriers, and small available sample sizes. 15,20,21 Research recruitment of undocumented populations is even more challenging given fears related to engagement with government and health care organizations, concerns about disclosing documentation status, discrimination, and competing economic and social demands for their time. 15,16,[22][23][24] Community-based recruitment has been successful in some studies with broader Latino samples and is likely to be critical to research with subsets of immigrant populations such as those without documentation.…”