1. Effect of homologous bone marrow injections in x-irradiated rabbits;Porter;Br J Exp Pathol,1957
2. Influence of renal insufficiency on levels of serum ribonuclease in patients with multiple myeloma;Karpetsky;J Natl Cancer Inst,1977
3. Biomarkers Definition Working Group Biomarkers and surrogate endpoints: preferred definitions and conceptual framework;Clin Pharmacol Therapeut,2001
4. What are biomarkers?;Strimbu;Curr Opin HIV AIDS,2010
5. Massachusetts general hospital center for biomarkers in imaging. http://biomarkers.org/NewFiles/faqs/definition.html.