Those who get pregnant before the age property is mainly a younger person and body that the growth is not yet fully. Or is no longer available, so there is a chance of pregnancy complications, birth rate and the risk of death and illness, such as the pelvis bone is too small not to be natural childbirth. The lack of knowledge and a readiness to prepare a mother, etc. The baby has a birth weight less, slow growth, brain development, premature interruption, etc.
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