The subject must be told whom to contact with any questions or concerns about the research, with questions about subjects’ rights, or in the event of a research-related injury. The phone numbers for the IRB and the principal investigator are to be listed in this section; those for co-investigators may be listed as deemed necessary by the principal investigator. These telephone numbers should be consistent with the number included in other materials given to the subject, e.g., a wallet card or brochures. This contact information should be readily available to the subject and should include toll-free numbers in each case.