1. *Department of Oncology/Pathology, Cancercentrum Karolinska, SE-171 76 Stockholm, Sweden;
2. Laboratory for Biological and Medical Mass Spectrometry, Uppsala Biomedical Centrum, 751 23 Uppsala, Sweden;
3. Department of Genetics and Pathology, Rudbeck Laboratory, Uppsala University, SE-751 85 Uppsala, Sweden; and
4. Department of Biotechnology, KTH/Alba Nova University Center, SE-106 91 Stockholm, Sweden