40
Participants
Start Date
January 31, 2004
Primary Completion Date
December 31, 2005
Study Completion Date
December 31, 2005
Folic acid
Administration of a daily tablet containing 5 mg of folic acid for 4 months.
Placebo
Administration of an oral placebo pill
"Hospital Universitario José E. González", Monterrey
Collaborators (1)
Laboratorios Valdecasas S.A.
UNKNOWN
Hospital Universitario Dr. Jose E. Gonzalez
OTHER