La Gamba, F., Corrao, G., Romio, S., Sturkenboom, M., Trifirò, G., Schink, T., de Ridder, M (2017) Combining evidence from multiple electronic health care databases: performances of one-stage and two-stage meta-analysis in matched case-control studies, Pharmacoepidemiology and Drug Safety

http://onlinelibrary.wiley.com/doi/10.1002/pds.4280/abstract

website