There was a general trend towards electronic versus nonelectronic reporting from 2012 to 2014.
Kehinde O. Raji, Lauren Payne, Suephy C. Chen 2015, 'Reporting Melanoma: A Nationwide Surveillance of State Cancer Registries', Journal of Skin Cancerhttp://dx.doi.org/10.1155/2015/904393. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Electronic and nonelectronic searches were conducted to identify relevant articles, with no restrictions in time or language.
Igho Onakpoya, Rohini Terry, Edzard Ernst 2011, 'The Use of Green Coffee Extract as a Weight Loss Supplement: A Systematic Review andMeta-Analysis of Randomised Clinical Trials', Gastroenterology Research and Practicehttp://dx.doi.org/10.1155/2011/382852. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)