DOI: https://doi.org/10.18597/rcog.1459
DOI: https://doi.org/10.18597/rcog.1461
DOI: https://doi.org/10.18597/rcog.1464
DOI: https://doi.org/10.18597/rcog.1467
DOI: https://doi.org/10.18597/rcog.1472
DOI: https://doi.org/10.18597/rcog.1474