C/O Rotary Narayana Nethralaya, , Kolkata - 700091, West Bengal, India
14/5/1 A, Hazra Road, Kalighat, , Kolkata - 700026, West Bengal, India
9, Circus Row, , Kolkata - 700017, West Bengal, India
GE 98, Rajdanga Main Road, , Kolkata - 700107, West Bengal, India
C/O Peerless Hospital & B K Roy Research Centre, , Kolkata - 700094, West Bengal, India