Puszyk, William Matthew, Crea, Francesco and Old, Robert W. . (2009) Unequal representation of different unique genomic DNA sequences in the cell-free plasma DNA of individual donors. Clinical Biochemistry, Vol.42 (No.7-8). pp. 736-738. ISSN 0009-9120

Puszyk, William Matthew, Chatha, Kamaljit , Elsenheimer, Selina, Crea, Francesco and Old, Robert W. . (2008) Methylation of the imprinted GNAS1 gene in cell-free plasma DNA : equal steady-state quantities of methylated and unmethylated DNA in plasma. Clinica Chimica Acta, Vol.400 (No.1-2). pp. 107-110. ISSN 0009-8981

Puszyk, William Matthew, Crea, F. (Francesco) and Old, R. W. (2008) Noninvasive prenatal diagnosis of aneuploidy using cell-free nucleic acids in maternal blood : promises and unanswered questions. Prenatal Diagnosis, Vol.28 (No.1). pp. 1-6. ISSN 0197-3851

Legler, Tobias J., Liu, Zhong, Mavrou, Ariadni, Finning, Kirstin, Hromadnikova, Ilona, Galbiati, Silvia, Meaney, Cathy, Hultén, Maj A., Crea, Francesco , Olsson, Martin L., Maddocks, Deborah G., Huang, Dorothy, Fisher, Sylvia Armstrong, Sprenger-Haussels, Markus, Soussan, Aicha Ait and van der Schoot, C. Ellen. (2007) Workshop report on the extraction of foetal DNA from maternal plasma. Prenatal Diagnosis, Vol.27 (No.9). pp. 824-829. ISSN 0197-3851