APA

Johnson W. G., Stenroos E. S., Spychala J. R., Chatkupt S., Ming S. X. & Buyske S. (20040916). New 19 bp deletion polymorphism in intron-1 of dihydrofolate reductase (DHFR): a risk factor for spina bifida acting in mothers during pregnancy?. : American journal of medical genetics. Part A.

Chicago

Johnson William G, Stenroos Edward S, Spychala John R, Chatkupt Sansnee, Ming Sue X and Buyske Steven. 20040916. New 19 bp deletion polymorphism in intron-1 of dihydrofolate reductase (DHFR): a risk factor for spina bifida acting in mothers during pregnancy?. : American journal of medical genetics. Part A.

Harvard

Johnson W. G., Stenroos E. S., Spychala J. R., Chatkupt S., Ming S. X. and Buyske S. (20040916). New 19 bp deletion polymorphism in intron-1 of dihydrofolate reductase (DHFR): a risk factor for spina bifida acting in mothers during pregnancy?. : American journal of medical genetics. Part A.

MLA

Johnson William G, Stenroos Edward S, Spychala John R, Chatkupt Sansnee, Ming Sue X and Buyske Steven. New 19 bp deletion polymorphism in intron-1 of dihydrofolate reductase (DHFR): a risk factor for spina bifida acting in mothers during pregnancy?. : American journal of medical genetics. Part A. 20040916.