After 10 years in World's leading Hospitals in London , Manchester and Cambridge in UK and USA , Dr Mukherjee is now a leading Private Multispecialty Consultant in Kolkata , in the fields of Critical Care Medicine ( Involving ALL specialties , and Nephrology ( particularly Acute and ITU based Multi organ / Kidney failures requiring Dialaysis , SLED , CRRT and other very specialised treatments under critical care Monitoring ) . You can get the phone number of Dr. P S Mukherjee on Timesmed.com