About: http://webisa.webdatacommons.org/291408350

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	As noted by Dr. Gary Whitford, the PTD is the ???minimum dose that could cause toxic signs and symptoms, including death, and that should trigger immediate therapeutic intervention and hospitalization.??? (Whitford 1987).
http://www.w3.org/ns/prov#wasQuotedFrom	fluoridealert.org