Cite
MLA Citation
Kim Verdurmen et al.. “Normal ranges for fetal electrocardiogram values for the healthy fetus of 18–24 weeks of gestation: a prospective cohort study.” BMC pregnancy and childbirth, vol. 16, no. 1, 2016, pp. 1–7. http://access.bl.uk/ark:/81055/vdc_100080588201.0x0000ea