Performance estimation of diagnostic tests for cervical precancer based on fluorescence spectroscopy: effects of tissue type, sample size, population, and signal-to-noise ratio. - Urs Utzinger; E. Vanessa Trujillo; E. Neely Atkinson; Michele F. Mitchell; Scott B. Cantor; Rebecca R. Richards-Kortum (IEEE Trans. Biomed. Eng., 1999)