Rectal examination during childbirth. Kehrer (Münch. med. W., 1921, No. 38), Chatillon (Journ. des pratic., 1921, No. 53), Liegner (Zéntralbl. f. G., 1921, No. 6), Teodor and Handtmann (Monatsschr. f. Geb. u. Gyn., 1921, H.½)