1)Woman's Health Japan.https://www.womenshealthjapan.com(Accessed June 20, 2021)
2)World Health Organization. Safe abortion : technical and policy guidance for health systems. Second edition. Published 2012 https://apps.who.int/iris/bitstream/handle/10665/70914/9789241548434_eng.pdf(Accessed June 20, 2021)
3)Sekiguchi A, et al : Safety of induced abortions at less than 12 weeks of pregnancy in Japan. Int J Gynaecol Obstet 129 : 54-57, 2015
4)Grimes DA, et al : Complications from legally-induced abortion : a review. Obstet Gynecol Surv 34 : 177-191, 1979
5)Edelman DA, et al : The effectiveness and complications of abortion by dilatation and vacuum aspiration versus dilatation and rigid metal curettage. Am J Obstet Gynecol 119 : 473-480, 1974
6)Lean TH, et al : A comparison of D & C and vacuum aspiration for performing first trimester abortion. Int J Gynaecol Obstet 14 : 481-486, 1976
7)Kulier R, et al : Surgical methods for first trimester termination of pregnancy. Cochrane Database Syst Rev 4 : CD002900, 2001
8)Kakinuma T, et al : Safety and efficacy of manual vacuum suction compared with conventional dilatation and sharp curettage and electric vacuum aspiration in surgical treatment of miscarriage : a randomized controlled trial. BMC Pregnancy Childbirth 20 : 695, 2020
9)Gilman Barber AR, et al : Curettage and Asherman's syndrome-lessons to(re-)learn? J Obstet Gynaecol Can 36 : 997-1001, 2014
10)Gonen Y, et al : Endometrial thickness and growth during ovarian stimulation : a possible predictor of implantation in in vitro fertilization. Fertil Steril 52 : 446-450, 1989
11)Kasius A, et al : Endometrial thickness and pregnancy rates after IVF : a systematic review and meta-analysis. Hum Reprod Update 20 : 530-541, 2014
12)Azumaguchi A, et al : Role of dilatation and curettage performed for spontaneous or induced abortion in the etiology of endometrial thinning. J Obstet Gynaecol Res 43 : 523-529, 2017
13)Goldberg AB, et al : Manual versus electric vacuum aspiration for early first-trimester abortion : a controlled study of complication rates. Obstet Gynecol 103 : 101-107, 2004
14)Lichtenberg ES, et al ; Society of Family Planning : Surgical abortion prior to 7 weeks of gestation. Contraception 88 : 7-17, 2013
15)Macisaac L, et al : Early surgical abortion : an alternative to and backup for medical abortion. Am J Obstet Gynecol 183 : S76-S83, 2000