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| Step no | Search strategy* |
| 1 | Title=(Strengthening the Reporting of Observational Studies in Epidemiology) AND Author=(von Elm) |
| 2 | Title=(Strengthening the Reporting of Observational Studies in Epidemiology) AND Author=(Vandenbroucke) |
| 3 | #1 OR #2 |
| 4 | Title=(STREGA) |
| 5 | #3 NOT #4 |
Web of Science was searched through the ISI Web of Knowledge platform (http://isiknowledge.com/). The search was conducted on 12 August 2010.
