P 58 F, Scheme 6 M, C I T Road (Near Manicktola Crossing), , Kolkata - 700054, West Bengal, India
45/7, Kabi Mukunda DAS Road, , Kolkata - 700065, West Bengal, India
C/O Priyamvada Birla Aravind Eye Hospital, 10, Loudon Street, , Kolkata - 700017, West Bengal, India
P 45, S N Roy Road, , Kolkata - 700038, West Bengal, India
20 A, Dr Biresh Guha Street, , Kolkata - 700017, West Bengal, India