Theoretical Bioinformatics, German Cancer Reseach Center, 69120 Heidelberg, Germany.|Theoretical Bioinformatics, German Cancer Reseach Center, 69120 Heidelberg, Germany.|Theoretical Bioinformatics, German Cancer Reseach Center, 69120 Heidelberg, Germany.|Theoretical Bioinformatics, German Cancer Reseach Center, 69120 Heidelberg, Germany.|Theoretical Bioinformatics, German Cancer Reseach Center, 69120 Heidelberg, Germany.|Theoretical Bioinformatics, German Cancer Reseach Center, 69120 Heidelberg, Germany.