228 A, A J C Bose Road (Near Exide), , Kolkata - 700020, West Bengal, India
C/O Priyamvada Birla Aravind Eye Hospital, 10, Loudon Street, Park Street, , Kolkata - 700016, West Bengal, India
98, House No 2, 8th Floor, Christopher Road, , Kolkata - 700046, West Bengal, India
82/1, Raja S C Mallik Road, , Kolkata - 700047, West Bengal, India
C/O B B Eye Foundation, 2/5, Ground Floor & 1st Floor & 2nd Floor, Sukhsagar Building, , Kolkata - 700020, West Bengal, India