About: http://webisa.webdatacommons.org/219531007

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	deficiency especially in people who are already borderline deficient in the vitamin (total vegetarians, for example) or those who are frequently exposed to the gas such as dentists and anesthesiologists.
http://www.w3.org/ns/prov#wasQuotedFrom	kendallmed.com