Impact of salivary flow and lysozyme content and output on the oral health of rheumatoid arthritis patients. - Zalewska, Anna; Waszkiewicz2, Napoleon; Szajda, Sławomir Dariusz; Waszkiel, Danuta (Advances in Hygiene & Experimental Medicine / Postepy Higieny i Medycyny Doswiadczalnej, 2011)