DOI: https://doi.org/10.18597/rcog.2266
DOI: https://doi.org/10.18597/rcog.2269
DOI: https://doi.org/10.18597/rcog.2270
DOI: https://doi.org/10.18597/rcog.2272
DOI: https://doi.org/10.18597/rcog.2275
DOI: https://doi.org/10.18597/rcog.2276
DOI: https://doi.org/10.18597/rcog.2941