“…Head and neck surgeons working at five other hospitals without a paper on CNB were contacted to obtain information on their use of CNB, and they confirmed that they rarely used CNB in clinical settings. Therefore, data from 14 papers [30,[32][33][34][35]41,46,[48][49][50]52,54,56,57] published by authors from eight hospitals favoring CNB were compared to data from 10 papers [25,28,29,37,38,43,45,47,53,60] published by authors from six hospitals that did not favor CNB to identify differences in the proportions of diagnoses according to the TBSRTC. Fig.…”