Peristalsis of the genital tract, and a new theory to explain relaxation of the vaginal outlet during labor / by James R. Chadwick.

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Peristalsis of the genital tract, and a new theory to explain relaxation of the vaginal outlet during labor / by James R. Chadwick. Public Domain Mark. Source: Wellcome Collection.

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This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.