| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7520242 | Journal of Clinical Epidemiology | 2016 | 7 Pages |
Abstract
During the period reviewed, few observational studies have been registered. Registration usually occurred after the study started, and prespecification of outcomes and statistical analysis rarely occurred.
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Authors
Stefania Boccia, Kenneth J. Rothman, Nikola Panic, Maria Elena Flacco, Annalisa Rosso, Roberta Pastorino, Lamberto Manzoli, Carlo La Vecchia, Paolo Villari, Paolo Boffetta, Walter Ricciardi, John P.A. Ioannidis,