Identification of SCD in pregnancy CPGs
We summarized the results of the search in the PRISMA statement flow diagram shown in Figure 1.16-18 The initial list of 96 found CPGs was reviewed and filtered by the assessors. Of these, 92 were excluded based on the eligibility criteria. Furthermore, four recent SCD in pregnancy CPGs complied with our PIPOH and inclusion criteria as shown in Figure 1. These CPGs were developed by ACOG in January 2007 (reaffirmed in 2018)21, NICE in June 2012 (with a minor update in August 2016)22, RCOG in August 2011 (updated in May 2018)23, and the US Department of Health and Human Services, Public Health Service, National Institutes of Health, National Heart, Lung, and Blood Institute in 2014.24