Wang, Z., Brito, J. P., Tsapas, A., Griebeler, M. L., Alahdab, F., & Murad, M. H. (2015). Systematic reviews with language restrictions and no author contact have lower overall credibility: A methodology study. Clin Epidemiol.

Wang, Zhen, Juan P. Brito, Apostolos Tsapas, Marcio L. Griebeler, Fares Alahdab, i Mohammad Hassan Murad. "Systematic Reviews With Language Restrictions and No Author Contact Have Lower Overall Credibility: A Methodology Study." Clin Epidemiol 2015.

Wang, Zhen, et al. "Systematic Reviews With Language Restrictions and No Author Contact Have Lower Overall Credibility: A Methodology Study." Clin Epidemiol 2015.