Use of glucose as a reducing agent in the semi-quantitative determination of paraquat in urine samples. José Rafael Luna, María Luisa Di Bernardo, María Ysabel García, Carlos Yánez, Richard Mejias, Alexis Morales, Lester Rodríguez, Fernando Ovalles.RETEL 13. (June-December 2007), Pages 30-45. [ Abstract ]
   
Lead intoxication: asociation between ecographical and biochemistry markers of cardiovascular risk. Feldman G, Martínez Riera N.  RETEL 14 (January-  2008). Pages 2-12 [ Abstract ]