GUWAHATI, Sept 25: In pursuance to the ongoing ‘Swachtaa Hi Seva’ the tiol Health Mission, Assam has organized a pledge-taking ceremony and cleaning drive at Dhirenpara Maternity & Child Welfare Hospital on Monday. Dr. Ashok Chandra Baishya, executive director, tiol Health Mission, Assam participated along with NHM senior officials and district health workers in the cleanliness drive, a press release said. The pledge-taking ceremony was organized by the health workers to maintain cleanliness, a press release said.