DOI: https://doi.org/10.18597/rcog.1658
DOI: https://doi.org/10.18597/rcog.1662
DOI: https://doi.org/10.18597/rcog.1663
DOI: https://doi.org/10.18597/rcog.1667
DOI: https://doi.org/10.18597/rcog.1668
DOI: https://doi.org/10.18597/rcog.1670
DOI: https://doi.org/10.18597/rcog.1673
DOI: https://doi.org/10.18597/rcog.1677