[1] Univ Chile, Fac Med, Dept Ciencias Neurol,Serv Neurol, Dept Med,Clin Alemana Santiago, Santiago, Chile
[2] Univ W Indies, Res Inst Trop Med, Bridgetown, Barbados
[3] Moinhos de Vento Hosp Assoc, Inst Educ & Res, Porto Alegre, RS, Brazil
[4] Natl Autonomous Univ Honduras, Neurol Training Program, Tegucigalpa, Honduras
[5] Ineroamer Stroke Soc, Tegucigalpa, Honduras
[6] Pan Amer Hlth Org, Hlth Surveillance & Dis Management, Washington, DC USA
[7] Univ Desarrollo, Clin Alemana Santiago, Dept Med, Santiago, Chile
[8] Univ Valparaiso, Dept Med, Catedra Neurol, Valparaiso, Chile
[9] Univ Desarrollo, Fac Ciencias Salud, Santiago, Chile
[10] Univ Chile, Minist Salud, Escuela Salud Publ, Santiago, Chile
[11] Univ Chile, Minist Salud, Dept Ciencias Neurol, Santiago, Chile