Hufnagl, Clemens, Stöcher Markus, Martin Moik, Roland Geisberger, and Richard Greil. 2013. “A Modified Phenol-Chloroform Extraction Method for Isolating Circulating Cell Free DNA of Tumor Patients”. Journal of Nucleic Acids Investigation 4 (1):e1. https://doi.org/10.4081/jnai.2013.4282.