Authors and affiliations:
Alejandra Aguilar Robles1 and Yves Carlier2
1 MD, Department of Anesthesiology, Hospital regional  Issemym, Tlalnepantla, Mexico city, Mexico; e-mail: aleta_ojsi-chivas@hotmail.com
2 MD, PhD,, Laboratoire de Parasitologie, Faculté de Médecine, Université Libre de Bruxelles (ULB), Bruxelles, Belgium; Department of Tropical Medicine, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, USA; e-mail: ycarlier@ulb.ac.be