[1] Council Nutr & Environm Med, Mo I Rana, Norway
[2] Assiut Univ, Fac Med, Dept Pediat, Assiut, Egypt
[3] Univ Verona, Dept Neurol & Movement Sci, Verona, Italy
[4] Inst Chron Illnesses Inc, Silver Spring, MD USA
[5] Univ Concepcion, Fac Ciencias Nat & Oceanog, Dept Zool, Concepcion, Chile