Authors: D F Archer; K McIntyre-Seltman; W W Wilborn; E A Dowling; F Cone; G W Creasy; M E Kafrissen Journal: Am J Obstet Gynecol Date: 1991-08 Impact factor: 8.661
Authors: T Fornander; L E Rutqvist; B Cedermark; U Glas; A Mattsson; C Silfverswärd; L Skoog; A Somell; T Theve; N Wilking Journal: Lancet Date: 1989-01-21 Impact factor: 79.321