Assertion: thalidomide's side effect | /r/HasProperty | based on rigorous scientific controls
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text: The Federation cannot take a formal stance on the matter of Thalidomide nor make any recommendation to patients as to whether thalassaemia patients should take thalidomide or not, until controlled clinical trials have been conducted to prove its efficacy as a treatment option for thalassaemia and determine potential side-effects, based on large international population samples and rigorous scientific controls.