Kallaur, A. P. (2007) “Frequency of the changes in the serum immunoglobulins levels of the patients attended at the University Hospital, Londrina, Paraná”, Semina: Ciências Biológicas e da Saúde, 28(1), pp. 23–32. doi: 10.5433/1679-0367.2007v28n1p23.