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The arched dorsal posture in obstetrics: the combined Trendelenburg-Walcher posture in obstetric operating, the Walcher, the Trendelenburg, and the Mercurio postures in midwifery
The arched dorsal posture in obstetrics: the combined Trendelenburg-Walcher posture in obstetric operating, the Walcher, the Trendelenburg, and the Mercurio postures in midwifery