DOI: https://doi.org/10.18597/rcog.1475
DOI: https://doi.org/10.18597/rcog.1477
DOI: https://doi.org/10.18597/rcog.1479
DOI: https://doi.org/10.18597/rcog.1483
DOI: https://doi.org/10.18597/rcog.1489
DOI: https://doi.org/10.18597/rcog.1496
DOI: https://doi.org/10.18597/rcog.1500