Short repeats in the spa gene of Staphylococcus aureus are prone to nonsense mutations: stop codons can be found in strains isolated from patients with generalized infection by Khrustalev, Vladislav Victorovich, Ghaznavi Rad, Ehsanollah, Neela, Vasantha Kumari, Shamsudin, Mariana Nor, Amouzandeh-Nobaveh, Alireza, Barkovsky, Eugene Victorovich