DOI: https://doi.org/10.18597/rcog.1835
DOI: https://doi.org/10.18597/rcog.1897
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DOI: https://doi.org/10.18597/rcog.1903
DOI: https://doi.org/10.18597/rcog.1905
DOI: https://doi.org/10.18597/rcog.1906
DOI: https://doi.org/10.18597/rcog.1910
DOI: https://doi.org/10.18597/rcog.1913