The protocol was approved by the Research Ethics Board of McMaster University. The interview guide included questions on understanding the terminology involved in recall/withdrawal situations; individuals' experiences of these situations and the actions taken by different individuals and or stakeholders at different stages in the process; existing policies and procedures; questions related to disclosure of information and notification of recipients, including who should be involved in this process and how it should be done. Respondents were also asked for any suggestions they might have on improving the process (see Additional File 1: Appendix 1).