[Methods of studying the duration of professional activity of physicians of retirement age].
D000367:Age Factors; D005260:Female; D006801:Humans; D008297:Male; D008722:Methods; D010820:Physicians; D012179:Retirement; D011795:Surveys and Questionnaires; D013997:Time Factors; D014586:USSR
O metodakh izucheniia prodolzhitel'nosti professional'noĭ deiatel'nosti vracheĭ v pensionnom vozraste.