CHENNAI, July 16: The International Integrity, Peace and Friendship Society has sponsored a symposium on Tamil Nadu's contribution to national integration and economic development. Union Minister for Youth Affairs and Sports, Dhanushkodi Adithan, inaugurated the symposium in the city on Monday. Dr Girish, Chairman, Rural Health Centure, Rotary Club of Anna Nagar, and P Subramani and G Manilal, industrialists, were among those who addressed the gathering.