1. WHO Director-General’s Opening Remarks at the Media Briefing on COVID-19. 2020 (press release).
2. Zhu B, Chen R, Li Y, eds. The Origin and Early Evolution of Rock Climbing. Atlantis Press; 2021 (2021-08-09T22:45:12.000Z).
3. Are adolescent climbers aware of the most common youth climbing injury and safe training practices?;Rachel;Int J Environ Res Publ Health,2020
4. Number of participants in climbing in the United States from 2006 to 2020; 2021. Available from: https://www.statista.com/statistics/191233/participants-in-climbing-in-the-us-since-2006/.
5. Rock climbing glossary; 2022. Available from: https://www.rei.com/learn/expert-advice/rock-climbing-glossary.html.