Krumrey-Langkammerer, Manuela
Haas, Johannes-Peter
Article History
Received: 23 November 2019
Accepted: 3 June 2020
First Online: 9 June 2020
Ethics approval and consent to participate
: Ethics approval was not needed as ultrasound is routinely used for detection and monitoring of salivary involvement. All participants provided written consent.
: Not applicable.
: Both authors declare that they have no competing interests.