[Hypothyroidism incidence and thyrotropin serum levels in newborns].

Background: congenital hypothyroidism is the third sub-clinic hereditary disease in Mexico. Infants with total or partial underactive thyroid gland presented at birth showed high levels of thyrotropin. This allows identifying patients at risk for developing it through screening tests.

[Assessment of the clinical efficacy and safety of epinastine plus pseudoephedrine vs loratadine plus pseudoephedrine in perennial allergic rhinitis].

Background: Several drugs for the treatment of perennial allergic rhinitis and its symptoms have been investigated since some years ago. These drugs are: steroidal-type immunoregulators, immunotherapy and antihistamines. Because of first generation of the last ones originated several side effects, pharmacological research was oriented to the search of formulas with the same of higher efficacy, but with fewer effects on central nervous system.