Depiction of the tablet application category rated most useful by survey respondents. TR-textbooks/reference, GMK-general medical knowledge, IEBSM-in-training exam/board study material, TG-techniques/guides, CTA-classifications/treatment algorithms, CETF-clinical exam tests & findings, CB-coding & billing, PRK-patient record keeping, PEM-patient education materials, CNU-current news/updates, ISPD-industry-sponsored product information, ISDI-industry-sponsored device information