Received: 14 February 2018
Accepted: 8 June 2018
First Online: 26 June 2018
Ethics approval and consent to participate
: The study was approved by the internal review boards of San Paolo Hospital – University of Milan. Written informed consent was obtained from each participant.
: Not applicable.
: Prof Luca Rossetti is a section editor for Glaucoma of BMC Ophthalmology.Other authors declare no competing interests.
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