APA

Halle K. F., Fjose M., Kristjansdottir H., Bjornsdottir A., Getz L., Tomasdottir M. O. & Sigurdsson J. A. (20190410). Use of pregnancy ultrasound before the 19th week scan: an analytical study based on the Icelandic Childbirth and Health Cohort. : BMC pregnancy and childbirth.

Chicago

Halle Kristine Flo, Fjose Maria, Kristjansdottir Hildur, Bjornsdottir Amalia, Getz Linn, Tomasdottir Margret Olafia and Sigurdsson Johann Agust. 20190410. Use of pregnancy ultrasound before the 19th week scan: an analytical study based on the Icelandic Childbirth and Health Cohort. : BMC pregnancy and childbirth.

Harvard

Halle K. F., Fjose M., Kristjansdottir H., Bjornsdottir A., Getz L., Tomasdottir M. O. and Sigurdsson J. A. (20190410). Use of pregnancy ultrasound before the 19th week scan: an analytical study based on the Icelandic Childbirth and Health Cohort. : BMC pregnancy and childbirth.

MLA

Halle Kristine Flo, Fjose Maria, Kristjansdottir Hildur, Bjornsdottir Amalia, Getz Linn, Tomasdottir Margret Olafia and Sigurdsson Johann Agust. Use of pregnancy ultrasound before the 19th week scan: an analytical study based on the Icelandic Childbirth and Health Cohort. : BMC pregnancy and childbirth. 20190410.