DOI: https://doi.org/10.18597/rcog.2677
DOI: https://doi.org/10.18597/rcog.2678
DOI: https://doi.org/10.18597/rcog.2680
DOI: https://doi.org/10.18597/rcog.2681
DOI: https://doi.org/10.18597/rcog.2991
DOI: https://doi.org/10.18597/rcog.2992