@misc{indiciae87d938a3e15e, title = {Decrease in endothelin-1 plasma levels during the menstrual cycle and after ethinylestradiol treatment.}, author = {G S Merki-Feld and P J Keller}, year = {1999}, doi = {10.7326/0003-4819-131-5-199909070-00019}, url = {https://pubmed.ncbi.nlm.nih.gov/10475898/}, note = {Source identifier: 10475898} }