Choroidal Thickness in Patients Diagnosed with Human Immunodeficiency Virus Infection: Results from Two Populations of Different Ethnicities: Response to Chay et al.'s Letter. (19th May 2019) - Agarwal, Aniruddha; Invernizzi, Alessandro; Jain, Sahil; Acquistapace, Alessandra; Riva, Agostino; Sharma, Aman; Gupta, Vishali; Singh, Ramandeep