“…Another limitation might be the number of nursing experts used or the criteria used to determine expertise ( Quatrini Carvalho Passos Guimarães, Pena, Lopes, Lopes, & Bottura Leite de Barros, ). However, the definition and required number of experts remain controversial, and researchers use a variety of methods and references, in light of the lack of consensus (Barreto et al., ; de Souza Oliveira et al., ; Moreira, ; Moreira et al., ; Santos & Lucena, 2016; Seganfredo & Almeida, ). In addition, the lack of research on outcome validation for maternal–infant care, especially with the use of psychometrics, also hindered the discussion of the findings.…”