1 Department of Ophthalmology, University Hospital Zurich, Zurich, Switzerland. Electronic address: sandrine.zweifel@usz.ch.
2 Institute of Medical Microbiology, University of Zurich, Zurich, Switzerland; Swiss National Center for Mycobacteria, University of Zurich, Institute of Medical Microbiology, Zurich, Switzerland.
3 Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
4 Department of Ophthalmology, University Hospital Zurich, Zurich, Switzerland; The Save Sight Institute, The University of Sydney, Sydney, Australia.
5 Department of Ophthalmology, University Hospital Zurich, Zurich, Switzerland.