New Delhi, Oct 25 (ANI): Prime Minister Narendra Modi on Saturday while addressing media persons at Diwali Milan Function thanked the journalists for their active participation in cleanliness mission. Modi said that media persons and columnists who have written articles or covered electronically the issue of cleanliness have done a great service to the nation. He said that preventive healthcare is more important than health care. He also said that by participating in the campaign for cleanliness through articles media is playing an important role in bringing change to society.