Opinion of the Economic and Social Committee on the ‘Proposal for a Decision of the European Parliament and of the Council extending certain programmes of Community action in the field of public health adopted by Decisions No. 645/96/EC, No. 646/96/EC, No. 647/96/EC, No. 102/97/EC, No. 1400/97/EC and No. 1296/1999/EC and amending those Decisions’