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Article History

Received: 20 April 2020

Accepted: 3 November 2020

First Online: 20 November 2020

Conflicts of interest

: JG has nothing to disclose. CB has nothing to disclose. JR reports personal fees from Eisai GmbH, outside the submitted work. JB reports personal fees from Medtronic, personal fees from Boehringer Ingelheim, personal fees from Zoll and grants from PCORI, all outside the submitted work.

: The study was performed in adherence to ethical guidelines. Ethical approval including a formal consent waiver for observational pupillometry was granted by the Hesse Medical Association Ethical Board.