Both Bio-Rad and Carl Zeiss have already been manufacturing confocal laser beam microscopes incorporating multiphoton technology. Additionally, Carl Zeiss provides signed development and collaboration agreements with Cornell, in Ithaca, N.Y., and with multiphoton microscopy co-inventor Watt W. At Cornell, Webb, a biophysicist, is normally director of the National Institutes of Health-funded Developmental Resource for Biophysical Imaging and Opto-electronics and may be the S.B.The therapy was adapted for illiterate participants and the ones exposed to ongoing violence potentially. The adaptations included an initial individual psychoeducational program, oral completion of assignments during group periods, and simplification of materials to facilitate understanding and memorization. Further details about modifications are offered in the Supplementary Appendix. Statistical Evaluation Assuming a 20 percent dropout rate, we calculated that enrollment of 180 participants in every study group would provide 80 percent power to detect at least a 0.5-point difference between groups with respect to the reduction in average symptom scores, adjusting for a variance-inflation factor of 2.0.