Correction to: Calcium and vitamin D supplementation and/or periodontal therapy in the treatment of periodontitis among Brazilian pregnant women: protocol of a feasibility randomised controlled trial (the IMPROVE trial).
Cocate PG., Kac G., Hieitmann BL., Nadanovsky P., da Veiga Soares Carvalho MC., Benaim C., Schlüssel MM., de Castro MBT., Alves-Santos NH., Baptista AF., Holick MF., Mokhtar RR., Bomfim AR., Adegboye ARA.
An amendment to this paper has been published and can be accessed via the original article.