DOI: https://doi.org/10.18597/rcog.1837
DOI: https://doi.org/10.18597/rcog.1839
DOI: https://doi.org/10.18597/rcog.1861
DOI: https://doi.org/10.18597/rcog.1866
DOI: https://doi.org/10.18597/rcog.1868
DOI: https://doi.org/10.18597/rcog.1877