Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Calcium:

"

Calcium is a common constituent of multivitamin dietary supplements,[1] but the composition of calcium complexes in supplements may affect its bioavailability which varies by solubility of the salt involved: calcium citrate, malate, and lactate are highly bioavailable, while the oxalate is less. Other calcium preparations include calcium carbonate, calcium citrate malate, and calcium gluconate.[1] The intestine absorbs about one-third of uncomplexed calcium consumed,[citation needed] and plasma calcium level is then regulated by the kidneys.[1]