DOI: https://doi.org/10.18597/rcog.1561
DOI: https://doi.org/10.18597/rcog.1563
DOI: https://doi.org/10.18597/rcog.1566
DOI: https://doi.org/10.18597/rcog.1569
DOI: https://doi.org/10.18597/rcog.1572
DOI: https://doi.org/10.18597/rcog.1573
DOI: https://doi.org/10.18597/rcog.1575