Search Tip 4. Use a multiple simultaneous search engine tool. This allows you to retrieve results from many engines simultaneously. Mednets (44) is a particularly useful site, because unlike most other combined search engines, it will simultaneously search multiple medical sites and Medline. With search options set to "orthopedics" (as is the case with the e-Hand search defaults), Mednets simultaneously runs searches from these sites: American College of Rheumatology, Arthroscopy, CANCERLIT, CDC, Journal of the American Medical Association, Journal Club, Medline, National Cancer Institute, National Guideline Clearinghouse, NIH, Orthogate, and Medline, compiles all results together, and has helpful result sorting options. Results can not be browsed in an expanded format as in PubMed, but the mix of sources makes this a very useful tool.