Unfortunately, there is no specific information available about a U.S. nonprofit organization called the "International Association of Trauma" with the EIN 650728592. Therefore, it is not possible to create a detailed Wikipedia-style article about this organization based on the provided search results. If more information becomes available, it might be feasible to construct an accurate and detailed article.

[1] https://atss.info/about-atss/history-values/ [2] https://iartc.org [3] https://istss.org [4] https://certifiedtraumarecoverycoaching.com/about-certification [5] https://ota.org/global-relations/international-ota/international-ota