GUWAHATI, June 16: The fourth Cochlear Implant surgery conducted under Snehasparsha scheme and ADIP (2014-15) in the department of ENT, Gauhati Medical College is going to be held on June 17 and 18. Mentor Surgeon Dr Mohan Kameswaram, Director of Madras ENT Research Foundation, Cheni and a team of surgeons of ENT department of Gauhati Medical College will operate the patients, a press release said.