1. Acute pericarditis: unique comorbidity of thyrotoxic crisis with Graves' disease;Inami;Int J Cardiol,2014
2. Pericardial disease in the elderly;Chhabra,2013
3. The pericardium: a comprehensive textbook;Spodick,1997
4. Spodick's sign;Makaryus;Am J Med,2008
5. Spodick's sign: a helpful clue to the diagnosis of acute pericarditis;Chaubey;Perm J. Winter,2004