Erratum to: Volume 1, Contraception and Reproductive Medicine

[This corrects the article DOI: 10.1186/s40834-016-0016-3.][This corrects the article DOI: 10.1186/s40834-016-0011-8.][This corrects the article DOI: 10.1186/s40834-016-0009-2.][This corrects the article DOI: 10.1186/s40834-016-0010-9.][This corrects the article DOI: 10.1186/s40834-016-0008-3.].