Understanding and addressing populations whose prior experience has led to mistrust in healthcare.

"Declarations Ethics approval and consent to participateAll methods were carried out in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments, or with comparable ethical standards. The study analyzed anonymized data from patient files. The research protocol was approved by the Helsinki committees of Sheba Medical Center (#2448-15-SMC) and Ben-Gurion University of the Negev (#2015 14) in Israel. Written informed consent was not required, due to the nature of the study. Consent for publicationNot applicable. Competing interestsThe authors declare that they have no competing interests. Competing interests The authors declare that they have no competing interests."

"Funding Gertner Institute for Epidemiology and Health Policy Research, Israel and the Israel National Insurance Institute. The funding institutions had no role in the design of the study; in the collection, analysis, and interpretation of data; and in writing the manuscript."