Sagoskin AW, Lessey BA, Mottla GL, Richter KS, Chetkowski RJ, Chang AS, Levy MJ, Stillman RJ. Salpingectomy or proximal tubal occlusion of unilateral hydrosalpinx increases the potential for spontaneous pregnancy. Hum Reprod. 2003 Dec; 18(12):2634-7.