An example of a study problem
An example of a study problem. Bias or truth?. How it all started 1968/69. Invited: 1622 women aged 38, 46, 50, 54 and 60 years Examined: 1462 women (90.1%). Psychiatric follow-up. 1992/93: Those born 1908, 1914, 1918 and 1922, i.e. the four oldest age cohorts aged 70, 74, 78 and 84,
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