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Article History

Received: 1 May 2019

Accepted: 13 April 2020

First Online: 26 April 2020

Ethics approval and consent to participate

: The study protocol was submitted to the Geneva research ethical committee (n° 14–059) and was exempted from formal review as it carried minimal risk for patients. Patients received an introductory letter explaining the random selection of participants and the purposes of the survey. No formal informed consent was retrieved, as patients were free to refuse to participate by not completing the questionnaire in its stamped envelope.

: Not applicable.

: None declared.