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2. Agency for Healthcare Research and Quality. Morbidity & Mortality Rounds on the Web; http://www.webmm.ahrq.gov/ Agency for Healthcare Research and Quality. Morbidity & Mortality Rounds on the Web; http://www.webmm.ahrq.gov/
3. National Cancer Institute. Research-based Web Design and Usability Guidelines. Dept. of Health & Human Services National Institutes of Health (updated edition 2006); http://www.usability.gov/guidelines/ National Cancer Institute. Research-based Web Design and Usability Guidelines . Dept. of Health & Human Services National Institutes of Health (updated edition 2006); http://www.usability.gov/guidelines/
4. National Institute of Standards and Technology-NIST (2007). Common industry specification for usability requirements NISTIR 7432; http://zing.ncsl.nist.gov/iusr/documents/CISU-RIR7432.pdf National Institute of Standards and Technology-NIST (2007). Common industry specification for usability requirements NISTIR 7432 ; http://zing.ncsl.nist.gov/iusr/documents/CISU-RIR7432.pdf