DOI: https://doi.org/10.18597/rcog.1754
DOI: https://doi.org/10.18597/rcog.1372
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DOI: https://doi.org/10.18597/rcog.1760
DOI: https://doi.org/10.18597/rcog.1763
DOI: https://doi.org/10.18597/rcog.1765