| V - Various | | | This group comprises many different types of drugs, and assigning DDDs are difficult. Very few DDDs are assigned in this group.
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| V09 - Diagnostic Radiopharmaceuticals | | | No DDDs have been assigned for radiopharmaceuticals.
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| V09E - Respiratory System | This group comprises radiopharmaceuticals for the lung ventilation and lung perfusion studies.
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| V09EX - Other Respiratory System Diagnostic Radiopharmaceuticals | | |
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| V09EX03 - Xenon (133xe) Gas |
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