DOI: https://doi.org/10.18597/rcog.1799
DOI: https://doi.org/10.18597/rcog.1803
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DOI: https://doi.org/10.18597/rcog.1817
DOI: https://doi.org/10.18597/rcog.1819
DOI: https://doi.org/10.18597/rcog.1824
DOI: https://doi.org/10.18597/rcog.1831