DOI: https://doi.org/10.18597/rcog.2120
DOI: https://doi.org/10.18597/rcog.2122
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DOI: https://doi.org/10.18597/rcog.2392
DOI: https://doi.org/10.18597/rcog.2394
DOI: https://doi.org/10.18597/rcog.2397
DOI: https://doi.org/10.18597/rcog.2914