1. Geiger SM, Massara CL, Bethony J, Soboslay PT, Correa-Oliveira R. Cellular responses and cytokine production in post-treatment hookworm patients from an endemic area in Brazil. Clin Exp Immunol. 2004;136:334–40. doi: 10.1111/j.1365-2249.2004.02449.x. [PMC free article] [PubMed] [Cross Ref]
2. Hartel C, Adam N, Strunk T, Temming P, Muller-Steinhardt M, Schultz C. Cytokine responses correlate differentially with age in infancy and early childhood. Clin Exp Immunol. 2005;142:446–53. [PMC free article] [PubMed]
3. McGuinness D, Bennett S, Riley E. Statistical analysis of highly skewed immune response data. J Immunol Methods. 1997;201:99–114. doi: 10.1016/S0022-1759(96)00216-5. [PubMed] [Cross Ref]
4. Bennett S, Riley EM. The statistical analysis of data from immunoepidemiological studies. J Immunol Methods. 1992;146:229–39. doi: 10.1016/0022-1759(92)90232-I. [PubMed] [Cross Ref]
5. Hollander M, Wolfe DA. Nonparametric Statistical Methods. 2. Wiley; 1999.