Environmental factors Iodine deficiency | |
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Maternal factors
Immunological: Thyroid antibodies (microsomal and TSH receptor) Iatrogenic: Drugs (amiodarone, mucolytic, anti-asthmatic, antithyroid Iodine disinfection (caesarean section, vaginal application, epidural anaesthesia) | |
Neonatal factors
Iatrogenic: Iodine disinfection (umbilical cord, presurgical intervention Contrast media (venous catheterisation, radiological investigation) |