Hufnagl, C., Stöcher M., Moik, M., Geisberger, R., & Greil, R. (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