Syrian state television said terrorists were behind the attack, adding that authorities were searching for those responsible.

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"If we have evidence that somebody is leaving Saudi Arabia for the purpose of joining militants he will be stopped and investigated for that, " he said, adding that the authorities had no evidence that Saudis had traveled to Syria so far.

MSN: Saudi steers citizens away from Syrian "jihad"

Once authorities started adding the vitamin to milk, rickets, a previously common bone deformity, virtually disappeared.

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