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Background The loss of participants in longitudinal studies due to non-contact, refusal or death can introduce bias into the results of such studies. The study described here examines...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: July 31, 2026 at 10:03 PM -
As readers may already be aware, the NIH have declared a plan that invites any journal that wishes to participate to deposit non-peer-reviewed research into PubMed Central, the new central...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: July 31, 2026 at 09:34 PM
