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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 (https://creativecommons.org/licenses/by/4.0/).
(A) Professional class of MHU members participating in the educational program. (B) Geographical distribution of the HNPHO (EODY) personnel across Greece. (C) Professional class distribution of trainers.