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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Preclinical studies carried out in different animal models for other tissue healing (LIPUS or shock wave treatment alone or combined with other therapies, e.g., MSC, grafts, or chemical compounds).