**Appendix A**

Information Sheet, Questionnaire and interview guide (English Translation for review only)

Flexible Surge Capacity Questionnaire

All resources within a community need to be used to combat a major incident or disaster. This puts high demands on a healthcare system in close collaboration with other partners and authorities. Such collaboration requires both knowledge, planning and practice and must be based on mutual understanding and respect for areas of activity and related responsibilities. In the event of many injured persons needing urgen<sup>t</sup> care, can the need for resources exceed the capacity of the hospitals near your centre/clinic/working place. We would like to investigate how different healthcare players/institutions/organizations can work together in specific events (scenario). Below are several questions that could provide guidance on how such collaboration can be built up in a given scenario. After reading the scenario carefully, please mark the answers that corresponds to the ability of your centre/clinic/working place. It is possible to select several options on the same question.

Participation in this study is voluntary, data would be handled confidentially and the answers will be de-identified. We hope you take the short time needed to answer our questions. This study is part of a PhD program at the University of Gothenburg/Sweden and Mahidol University/Thailand.

On behalf of the research group

Name: xxxxxxxxxxxxxxxxxxxxxx, Date: xxxxxx
