TUVEMO TORSTEN, and STRANDBERG KJELL. “Effects and Interactions of Oxygen and Prostaglandins on the Tone of the Isolated Human Umbilical Artery”. Upsala Journal of Medical Sciences 80, no. 3 (November 1, 1975): 131-134. Accessed February 20, 2025. https://ujms.net/index.php/ujms/article/view/7350.