Article History
Received: 12 December 2018
Revised: 1 May 2019
Accepted: 11 July 2019
First Online: 12 August 2019
Compliance with ethical standards
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: M.A.Z. is a consultant for Boerhinger Ingelheim, Cell Cure, Chengdu Kanghong Biotech, Coherus Biosciences, Daiichi Sankyo, Frequency Therapeutics, Genentech/Roche, Healios KK, Iridex, Isarna Therapeutics, Makindus, Novartis Pharma AG, Ophthotech Corp., Percept Corp. The authors declare that they have no conflict of interests.