DOI: https://doi.org/10.18597/rcog.2230
DOI: https://doi.org/10.18597/rcog.2233
DOI: https://doi.org/10.18597/rcog.2234
DOI: https://doi.org/10.18597/rcog.2236
DOI: https://doi.org/10.18597/rcog.2238
DOI: https://doi.org/10.18597/rcog.2939