Childbirth is the culmination of a human pregnancy or gestation period with the delivery of one or more newborn infants from a woman's uterus. The process of human childbirth is categorized in 3 stages of labour. The first stage accomplishes the shortening and then the dilation of the cervix. It is deemed to have started when the cervix is 3 cm dilated, and ends with full dilation. Contractions begin in...
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