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Fetal leg and femur/foot length ratio: a marker for trisomy 21.
Johnson MP, Barr M Jr, Treadwell MC, Michaelson J, Isada NB, Pryde PG, Dombrowski MP, Cotton DB, Evans MI. Johnson MP, et al. Am J Obstet Gynecol. 1993 Sep;169(3):557-63. doi: 10.1016/0002-9378(93)90620-x. Am J Obstet Gynecol. 1993. PMID: 8372862
Initial Use of Ambrisentan plus Tadalafil in Pulmonary Arterial Hypertension.
Galiè N, Barberà JA, Frost AE, Ghofrani HA, Hoeper MM, McLaughlin VV, Peacock AJ, Simonneau G, Vachiery JL, Grünig E, Oudiz RJ, Vonk-Noordegraaf A, White RJ, Blair C, Gillies H, Miller KL, Harris JH, Langley J, Rubin LJ; AMBITION Investigators. Galiè N, et al. N Engl J Med. 2015 Aug 27;373(9):834-44. doi: 10.1056/NEJMoa1413687. N Engl J Med. 2015. PMID: 26308684 Free article. Clinical Trial.
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