About the Authors

Semra Ozdemir

Roles Conceptualization, Formal analysis, Funding acquisition, Methodology, Writing – original draft, Writing – review & editing

semra.ozdemir@duke-nus.edu.sg

Affiliations Signature Programme in Health Services and Systems Research, Duke-NUS Medical School, Singapore, Singapore, Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore

Eric Finkelstein

Roles Conceptualization, Methodology, Writing – review & editing

Affiliations Signature Programme in Health Services and Systems Research, Duke-NUS Medical School, Singapore, Singapore, Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore, Duke Global Health Research Institute, Duke University, Durham, North Carolina, United States of America

Jia Jia Lee

Roles Conceptualization, Data curation, Project administration, Writing – original draft, Writing – review & editing

Affiliation Signature Programme in Health Services and Systems Research, Duke-NUS Medical School, Singapore, Singapore

Issac Horng Khit Too

Roles Conceptualization, Writing – review & editing

Affiliation Medical Affairs, Novartis Singapore Private Limited, Singapore, Singapore

Kelvin Yi Chong Teo

Roles Data curation, Project administration, Writing – review & editing

Affiliations Medical Retina, Ophthalmology, Singapore National Eye Centre, Singapore, Singapore, Ophthalmology & Visual Sciences Academic Clinical Program, SingHealth Duke-NUS, Singapore, Singapore

Anna Chen Sim Tan

Roles Data curation, Project administration, Writing – review & editing

Affiliations Medical Retina, Ophthalmology, Singapore National Eye Centre, Singapore, Singapore, Ophthalmology & Visual Sciences Academic Clinical Program, SingHealth Duke-NUS, Singapore, Singapore

Tien Yin Wong

Roles Conceptualization, Data curation, Project administration, Writing – review & editing

Affiliations Medical Retina, Ophthalmology, Singapore National Eye Centre, Singapore, Singapore, Ophthalmology & Visual Sciences Academic Clinical Program, SingHealth Duke-NUS, Singapore, Singapore

Gemmy Chui Ming Cheung

Roles Conceptualization, Writing – review & editing

Affiliations Medical Retina, Ophthalmology, Singapore National Eye Centre, Singapore, Singapore, Ophthalmology & Visual Sciences Academic Clinical Program, SingHealth Duke-NUS, Singapore, Singapore

Competing Interests

Semra Ozdemir, Anna Cheng Sim Tan, Kelvin Yi Chong Teo, Tien Yin Wong and Gemmy Chui Ming Cheung reported receiving grants from Novartis during the conduct of the study. Issac Horng Khit Too is being employed by Novartis. Eric Finkelstein and Jia Jia Lee reported no conflict of interest. This does not alter our adherence to PLOS ONE policies on sharing data and materials.