Medicinal preparations for the diagnosis, treatment or prevention of Central Nervous System diseases, Liver diseases, Neuromuscular diseases and Cardiovascular diseases, namely, viral systems, gene therapy systems, nucleic acid delivery systems, viral vectors, non-viral vectors, gene therapy vectors, nucleic acid delivery vectors, and cells transformed by viral vectors, non-viral vectors, gene therapy vectors or nucleic acid delivery vectors; Viral systems, gene therapy systems, nucleic acid ...