Number of items prescribed per patient

We thank the members of the research group in public policies and economic regulation of the University of Barcelona and the participants in the 3rd 

International Conference of the European Network on Industrial Policy, held in Dublin in December 1999, for their comments. 

Shepherd, W.G. (1997), Dim prospects effective competition in telecommunications, railroads, and electricity , The Antitrust Bulletin, 42 (1), 151-75. 

and White, L.W. (1994), The Antitrust Revolution the Role of Economics, New York HarperCollins. 

Farmaindustria (1998), La industria farmaceutica en cifras, Madrid Asociacion de Empresarios de la Industria Farmaceutica. 

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