benefits classification functions oxidation free radicals iugr pre term child problems causes of lbw kmc kangroo mother care children birth weight complication pregnancy low birth weight color coding types of wastes bmw waste disinfection chemicals disinfection hazardous waste health hazards disposal incineration hospital waste anatomical waste biomedical waste management disease agent immunity reservoir zoonotic dynamics of disease susceptibility direct transmission vector borne infection sources of infection modes transmission communicable sporadic endemic epidemic pandemic infectious diseases epidemiology
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