[1] HOP ENFANTS JESUS, DEPT NEUROL SCI, QUEBEC CITY, PQ, CANADA
[2] NOTRE DAME HOSP, DEPT NEUROL, MONTREAL, PQ, CANADA
[3] VANCOUVER HOSP & HLTH SCI CTR, NEUROMUSCULAR DIS UNIT, VANCOUVER, BC V5Z 1M9, CANADA
[4] BAYLOR COLL MED, DEPT NEUROL, HOUSTON, TX 77030 USA
[5] TUFTS UNIV NEW ENGLAND MED CTR, DEPT NEUROL, BOSTON, MA 02111 USA
[6] RHONE POULENC RORER, ANTONY, FRANCE
[7] RHONE POULENC RORER, COLLEGEVILLE, PA USA
[8] NORTHWESTERN UNIV, SCH MED, DEPT NEUROL, CHICAGO, IL 60611 USA
[9] JOHNS HOPKINS UNIV, SCH MED, DEPT NEUROL, BALTIMORE, MD 21205 USA
[10] HOP LA PITIE SALPETRIERE, DEPT PHARMACOL, PARIS, FRANCE
[11] INST PSYCHIAT, DEPT NEUROL, LONDON SE5 8AF, ENGLAND
[12] UNIV LOUVAIN, BRUSSELS, BELGIUM
[13] HOP ENFANTS LA TIMONE, MARSEILLE, FRANCE
[14] HOP G CHAULIAC, MONTPELLIER, FRANCE
[15] HOP PURPAN, TOULOUSE, FRANCE
[16] HOP LOUIS PASTEUR, F-06002 NICE, FRANCE
[17] HOP HAUT LEVEQUE, PESSAC, FRANCE
[18] HOP DUPUYTEN, LIMOGES, FRANCE
[19] CHU COTE NACRE, CAEN, FRANCE
[20] HANNOVER MED SCH, HANNOVER, GERMANY
[21] UNIV BERLIN, NEUROL KLIN, BERLIN, GERMANY
[22] INST SALUD CARLOS III, MADRID, SPAIN
[23] QUEENS MED CTR, NOTTINGHAM NG7 2UH, ENGLAND
[24] CHARING CROSS HOSP, LONDON, ENGLAND
[25] ROYAL PRESTON HOSP, PRESTON, LANCS, ENGLAND
[26] QUEEN ELIZABETH HOSP, BIRMINGHAM B15 2TH, W MIDLANDS, ENGLAND
[27] MANCHESTER ROYAL INFIRM, MANCHESTER M13 9WL, LANCS, ENGLAND
[28] QUEEN VICTORIA INFIRM, NEWCASTLE UPON TYNE, TYNE & WEAR, ENGLAND
[29] ROYAL LONDON HOSP, LONDON E1 1BB, ENGLAND
[30] BAYLOR COLL MED, HOUSTON, TX USA
[31] VAMC, HOUSTON, TX USA
[32] CALIF PACIFIC MED CTR, SAN FRANCISCO, CA USA