DOI: https://doi.org/10.18597/rcog.1917
DOI: https://doi.org/10.18597/rcog.1922
DOI: https://doi.org/10.18597/rcog.1925
DOI: https://doi.org/10.18597/rcog.1931
DOI: https://doi.org/10.18597/rcog.1935
DOI: https://doi.org/10.18597/rcog.1940
DOI: https://doi.org/10.18597/rcog.1944
DOI: https://doi.org/10.18597/rcog.1951