Int J Gynaecol Obstet. 

Dragoman MV, Tepper NK, Fu R, Curtis KM, Chou R, Gaffield ME

doi: 10.1002/ijgo.12455.

Am J Obstet Gynecol.

Iversen L, Sivasubramaniam S, Lee AJ, Fielding S, Hannaford PC

doi: 10.1016/j.ajog.2017.02.002.

Contraception. 

Dinger J, Do Minh T, Heinemann K

doi: 10.1016/

Contraception.

Chen MJ, Hsia JK, Creinin MD

doi: 10.1016/

Int J Womens Health. 

Nappi RE, Lobo Abascal P, Hsieh J, Micheletti MC

doi: 10.2147/IJWH.S142078.

Cochrane Database Syst Rev.

Brown J, Crawford TJ, Datta S, Prentice A

doi: 10.1002/

Urology.

Tan P, Liu L, Wei S, Tang Z, Yang L, Wei Q

doi: 10.1016/

Am J Obstet Gynecol.

Simmons KB, Haddad LB, Nanda K, Curtis KM

doi: 10.1016/j.ajog.2017.07.003.

J Headache Pain.

Sacco S, Merki-Feld GS, Ægidius KL, Bitzer J, Canonico M, Gantenbein AR, Kurth T, Lampl C, Lidegaard Ø, Anne MacGregor E, MaassenVanDenBrink A, Mitsikostas DD, Nappi RE, Ntaios G, Paemeleire K, Sandset PM, Terwindt GM, Vetvik KG, Martelletti P, European Headache Federation (EHF), the European Society of Contraception and Reproductive Health (ESCRH)

doi: 10.1186/s10194-018-0896-5.