one of the most widely used rules of jurisprudence is ‘impediment removal’ often expressed by the phrase ‘when impediment is removed, the forbidden is regained.’ the application of this rule in jurisprudential matters produces important outcomes since impediment in those matters can prevent the penetration (validity) of the primary ruling, and as a result, the secondary ruling would be issued a...

  Background: Poisoning is one of the main causes of visits to emergency departments and hospitals in Iran. Drug and Poison Information Centers (DPIC) are reliable sources to guide poisoned patients and provide information about pharmaceutical agents. This study was designed to analyze recorded phone calls to Iran DPICs during 2011-2012. Methods: This was a retrospective study on phone calls to...