McLellan RA, Oscarson M, Seidegård J, Evans DA, Ingelman-Sundberg M (1997). «Frequent occurrence of CYP2D6 gene duplication in Saudi Arabians». Pharmacogenetics7 (3): 187-91. PMID9241658. doi:10.1097/00008571-199706000-00003.
McLellan RA, Oscarson M, Seidegård J, Evans DA, Ingelman-Sundberg M (1997). «Frequent occurrence of CYP2D6 gene duplication in Saudi Arabians». Pharmacogenetics7 (3): 187-91. PMID9241658. doi:10.1097/00008571-199706000-00003.