[1] Catholic Univ Louvain, Clin Mont Godinne, Dept Paediat, B-5530 Yvoir, Belgium
[2] Catholic Univ Louvain, Clin Mont Godinne, Dept Nucl Med, B-5530 Yvoir, Belgium
[3] Catholic Univ Louvain, Clin Mont Godinne, Dept Microbiol, B-5530 Yvoir, Belgium
[4] Catholic Univ Louvain, Clin Mont Godinne, Dept Biochem, B-5530 Yvoir, Belgium