48, Gariahat Road, , Kolkata - 700019, West Bengal, India
Cf -137, Salt Lake City, , Kolkata - 700064, West Bengal, India
A E 284, Sector 1, , Kolkata - 700064, West Bengal, India
11 B, Jatindra Mohan Avenue, , Kolkata - 700006, West Bengal, India
C/O Priyamvada Birla Aravind Eye Hospital, 10, Loudon Street, Park Street, , Kolkata - 700016, West Bengal, India