DOI: https://doi.org/10.18597/rcog.1439
DOI: https://doi.org/10.18597/rcog.1444
DOI: https://doi.org/10.18597/rcog.1447
DOI: https://doi.org/10.18597/rcog.1449
DOI: https://doi.org/10.18597/rcog.1452
DOI: https://doi.org/10.18597/rcog.1455