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.
The Day The Music Died. On 3rd Feb 1959, 22-year-old Buddy Holly, the Big Bopper, and Ritchie Valens, aged 17, died in a plane crash shortly after takeoff from Clear Lake, Iowa. The pilot of the single-engine Beechcraft Bonanza was also killed. Holly hired the plane after heating problems developed on his tour bus.