EBUS-TBNA: popular but not universal.

In recent years, the number of publications concerning interventional bronchoscopy has increased dramatically. The present paper focused on publications related to endobronchial ultrasound technique. Its aim was to provide an overview of the nature of publications about endobronchial ultrasound technique, especially with regard to the countries of origin of publications and the categories of journals in which these papers are published. Overall, the review demonstrates a limited use of endobronchial ultrasound technique in many countries.