 If infants develop symptoms during the intervention period 6 to 12 months the group to which infant belongs will be decoded. Infants belonging to group A on a gluten-containing diet presenting symptoms suggestive of CD will undergo a complete diagnostic work-up for CD. These events will be reported in a form. After age 1 year, infants developing symptoms suggestive of active CD chronic diarrhea, failure to thrive, etc in-between the scheduled visits will undergo a supplementary serological investigation. A small intestinal biopsy will be recommended in cases showing either serum anti-tTG abs higher than the cut-off or IgG-AGA higher than cut-off in infants with selective IgA deficiency. Standard medical care and not part of research. 