â¤0.2 mg/dL. Measurement of the levels of bilirubin is used in the diagnosis and treatment of liver, hemolytic, hematologic, and metabolic disorders, including hepatitis and gall bladder obstruction. The assessment of direct bilirubin is helpful in the differentiation of hepatic disorders.
Ritchie Valens. In an all too brief career, Ritchie Valens was the first Chicano rock and roll star, having his best remembered hit, La Bamba, just one month before his untimely death with Buddy Holly and the Big Bopper on February 3, 1959.
On February 3, 1959, on what has become known as  The Day the Music Died , Valens died in a plane crash in Iowa, an accident that also claimed the lives of fellow musicians Buddy Holly and J. P.  The Big Bopper  Richardson, as well as pilot Roger Peterson.