[1
]
Department of Ophthalmology, R. G. Kar Medical College and Hospital, 1, Kshudiram
Bose Sarani, Kolkata, 700004, India. sabyasachi.bandyopadhyay@yahoo.com.
[2
]
Department of Ophthalmology, NRS Medical College and Hospital, Kolkata, 700014, India.
[3
]
Department of Ophthalmology, R. G. Kar Medical College and Hospital, 1, Kshudiram
Bose Sarani, Kolkata, 700004, India.
[4
]
Department of Community Medicine, R. G. Kar Medical College and Hospital, 1, Kshudiram
Bose Sarani, Kolkata, 700004, India.