Aetna Intelihealth
Aetna: Inteli Health: Hematuria (Blood in the Urine)
Thorough overview of hematuria. Includes information on symptoms, prevention, treatment, and more.
WebMD
Web Md: Impetigo
This site from WebMD Health provides great information on the bacterial skin infection known as impetigo. It gives a good basic overview and then provides links to information on symptoms as well as treatment.