DOI: https://doi.org/10.18597/rcog.1270
DOI: https://doi.org/10.18597/rcog.1273
DOI: https://doi.org/10.18597/rcog.1275
DOI: https://doi.org/10.18597/rcog.1279
DOI: https://doi.org/10.18597/rcog.1286
DOI: https://doi.org/10.18597/rcog.1288