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Web Searching Tips
Use the "Advanced Google Search". This page allows you to search Google like a database.
Limit web results to .org or .gov by using the "Site:" search (EX: lupus ana test site:.org) This search will only yield web pages that end in .org. The web pages will all be about lupus and the ana test
Try finding a Foundation or Association website by using keywords, such as association and lupus. The web address will probably end in org.