DOI: https://doi.org/10.18597/rcog.1649
DOI: https://doi.org/10.18597/rcog.1651
DOI: https://doi.org/10.18597/rcog.1654
DOI: https://doi.org/10.18597/rcog.1659
DOI: https://doi.org/10.18597/rcog.1661
DOI: https://doi.org/10.18597/rcog.1665
DOI: https://doi.org/10.18597/rcog.1666