Second, in a study2 that assessed EMN without additional guidance, there was no difference in terms of diagnostic accuracy between bronchoscopists. Is this also the case in the study by Eberhardt et al,1 especially considering that two centers participated in this investigation? In addition, was there a learning curve? If yes, an active participation of pulmonologists in educational courses should be greatly encouraged. Third, we would appreciate it if the authors could provide some additional data regarding the mean distance between the center of the lesion and the visceral pleura, so that we can have a better description of lesion characteristics.