About: http://webisa.webdatacommons.org/244604458

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Finally, the two studies using the active forms of vitamin D showed a relative risk reduction similar to that of the supplemental forms, but had twice the hypercalcemia rate compared with placebo.
http://www.w3.org/ns/prov#wasQuotedFrom	aafp.org