APA

Hagen A., Albig M., Keller T., Stumm M. & Entezami M. (20160901). Suspicious Prenasal Skin Thickness-to-Nasal Bone Length Ratio: Prevalence and Correlation with Other Markers in Second and Third Trimester Fetuses with Down Syndrome. : Ultraschall in der Medizin (Stuttgart, Germany : 1980).

Chicago

Hagen A, Albig M, Keller T, Stumm M and Entezami M. 20160901. Suspicious Prenasal Skin Thickness-to-Nasal Bone Length Ratio: Prevalence and Correlation with Other Markers in Second and Third Trimester Fetuses with Down Syndrome. : Ultraschall in der Medizin (Stuttgart, Germany : 1980).

Harvard

Hagen A., Albig M., Keller T., Stumm M. and Entezami M. (20160901). Suspicious Prenasal Skin Thickness-to-Nasal Bone Length Ratio: Prevalence and Correlation with Other Markers in Second and Third Trimester Fetuses with Down Syndrome. : Ultraschall in der Medizin (Stuttgart, Germany : 1980).

MLA

Hagen A, Albig M, Keller T, Stumm M and Entezami M. Suspicious Prenasal Skin Thickness-to-Nasal Bone Length Ratio: Prevalence and Correlation with Other Markers in Second and Third Trimester Fetuses with Down Syndrome. : Ultraschall in der Medizin (Stuttgart, Germany : 1980). 20160901.