Ethical problems.
D015121:6-Ketoprostaglandin F1 alpha / Q000097:blood; D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D011464:Epoprostenol / Q000097:blood*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D011453:Prostaglandins / Q000097:blood*
D011453:Prostaglandins; D015121:6-Ketoprostaglandin F1 alpha; D011464:Epoprostenol