http://www.ncbi.nlm.nih.gov:80/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11890845&dopt=Abstract
Arch Neurol 2002 Mar;59(3):413-7
Gironell A, Kulisevsky J, Lorenzo J, Barbanoj M, Pascual-Sedano B, Otermin P.
Servei de Neurologia, Hospital de Sant Pau, Av Sant Antoni Ma Claret 167, 08025