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Pelvic inflammatory disease. Chlamydia or gonorrhea spreads up the vagina into the uterus and then t
Dentition of a collared peccary, as illustrated in Knight's Sketches in Natural History
Interventions to promote safety for children
Epidemiologists look for the causes of disease, such as toxic waste and industrial pollution, at the
The hatred and vengeance of adults become the children’s heritage. The headband of this 4-year-old ...
Children and adolescents define themselves as they get older