Participation in diagnostic microbiology internal and external quality control (QC) processes is good laboratory practice and an essential component of a quality management system. However. no QC scheme for diagnostic oral microbiology existed until 2009 when the Clinical Oral Microbiology (COMB) Network was created. At the European Oral Microbiology Workshop in 2008. https://setartradinges.shop/product-category/fedora-hat/