[1] Sanatorio Guemes Hosp Privado, Buenos Aires, DF, Argentina
[2] Hosp Univ, Inst Alfredo Lanari, Buenos Aires, DF, Argentina
[3] Sanatorio Allende, Cordoba, Argentina
[4] Hosp Ramos Mejia, Buenos Aires, DF, Argentina
[5] Hosp Ramos Mejia, Leloir Inst, Buenos Aires, DF, Argentina
[6] Ctr Invest DIABAID, Buenos Aires, DF, Argentina
[7] Hosp Britanico Buenos Aires, Buenos Aires, DF, Argentina
[8] Hosp Clin Jose San Martin, Buenos Aires, DF, Argentina
[9] Hosp Aleman, Buenos Aires, DF, Argentina
[10] INECO Neurociencias Orono, Rosario, Argentina
[11] Hosp Cent, Mendoza, Argentina
[12] Hosp Italiano Buenos Aires, Ctr Esclerosis Multiple Buenos Aires, Buenos Aires, DF, Argentina
[13] Hosp Italiano Buenos Aires, Buenos Aires, DF, Argentina