“…Data from 12 international cohorts on PCD, presented by H albeisen et al [ 40 ], reported poor adherence to the 2009 consensus recommendations, due to the decrease in use of EM and the low use of test combinations, and suggest the need to implement the more recent evidence-based guidelines published by the ERS PCD Task Force [ 41 ]. Potential technologies to support diagnosis include a new portable nNO analyser (NIOX VERO nasal application; Circassia Pharmaceuticals Inc., Oxford, UK), which L ucas et al [ 42 ] reported can be used to differentiate patients with PCD from healthy individuals, and electron tomography (an extension of EM that produces high-resolution three-dimensional ultrastructural reconstructions), which S hoemark et al [ 43 ] reported is effective in identifying defects that are difficult to identify using conventional EM. Indeed, the accuracy of currently available tests in PCD diagnosis remains sometimes questionable [ 41 ].…”