behandelingsmethoden congresses environmentalaspects environmentalexposure environmentalhazards environmentalhealth environmentalhealthsciences epidemiology ethics frühgeburt hazardoussubstances intensivecare jurisprudence kurs labor legislation medical medicalethics moralandethicalaspects neonatal neonatology nursing obstetriclabor partusimmaturus pediatric perinatology premature prematureinfants prematurelabor umweltfaktor wq330r7452003 ym7105