40, BANGUR AVENUE, BLOCK- A, Bangur Avenue, , Kolkata - 700055, West Bengal, India
145, Muktaram Babu Street, , Kolkata - 700007, West Bengal, India
81A, Diamond Harbour Road, 81A Diamond Harbour Road, , Kolkata - 700023, West Bengal, India
C/O Priyamvada Birla Aravind Eye Hospital, 10, Loudon Street, , Kolkata - 700017, West Bengal, India
5 B, Royd Street, , Kolkata - 700016, West Bengal, India