They are charged with 11 felony counts each in the shooting deaths of 40-year-old Ildiko Freitas and her parents, 69-year-old Janos Volgyesi and 70-year-old Hildegard Volgyesi.

CNN: STORY HIGHLIGHTS

In a study presented last month at the annual meeting of the ADA, UT Southwestern researcher Ildiko Lingvay said two types of more aggressive treatments using insulin and drugs started when patients were initially diagnosed effectively preserved the function of beta cells in a study of 58 patients followed for three years.

WSJ: New Strategies for Treating Diabetes