Findings at a re-examination of a Self-administered Questionnaire after Two and a half Years in a Sample of Sixty-year-old Men

Autor: Skarfors, Einar, Waern, Urban, Lidell, Christer
Zdroj: Scandinavian Journal of Social Medicine, 1980 Jan 01. 8(3), 137-139.
Databáze: JSTOR Journals