The following supplemental materials are related to the following paper: Gordon DR, Radecki Breitkopf C, Robinson M, Petersen WO, Egginton JS, Chaffee KG, Peterson GM, Wolf SM, Koenig BA. Should Researchers Offer Results to Family Members of Cancer Biobank Participants? A Mixed-Methods Study of Proband and Family Preferences. AJOB Empirical Bioethics 2018:1-22. They are part of the NIH-funded project Disclosing Genomic Incidental Findings in a Cancer Biobank: An ELSI Experiment.