PT - JOURNAL ARTICLE ED - , TI - Methodology of the Study of Ageing AID - 10.1212/WNL.8.1.86 DP - 1958 Jan 01 TA - Neurology PG - 86--86 VI - 8 IP - 1 4099 - http://n.neurology.org/content/8/1/86.1.short 4100 - http://n.neurology.org/content/8/1/86.1.full SO - Neurology1958 Jan 01; 8