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APA Citation
Morgan, R. L., Thayer, K. A., Santesso, N., Holloway, A. C., Blain, R., Eftim, S. E., Goldstone, A. E., Ross, P., Ansari, M., Akl, E., Filippini, T., Hansell, A., Meerpohl, J. J., Mustafa, R. A., Verbeek, J., Vinceti, M., Whaley, P., Schünemann, H. J., & , (2019). a risk of bias instrument for non-randomized studies of exposures: A users' guide to its application in the context of GRADE. Environment international, 122, 168–184. http://access.bl.uk/ark:/81055/vdc_100076297210.0x000040