Correction to: Dental vulnerability scale in primary health care: evidence of content and structure internal validity - Danielle da Costa Palacio; Flavio Rebustini; Daniele Boina de Oliveira; João Peres Neto; Wander Barbieri; Thais Paragis Sanchez; Ana Carolina Cintra Nunes Mafra; Daiana Bonfim; Camila Nascimento Monteiro; Valmir Vanderlei Gomes Filho; Danielle Viana Ribeiro; Leandro Marsico Loschiavo; et al. (BMC, 2021)