About: http://webisa.webdatacommons.org/80659990

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	At that time, IBD was considered as a psychosomatic disease, and its relation to stress and other psychological factors was thought so strong that researchers felt no need to use any control group in their studies.
http://www.w3.org/ns/prov#wasQuotedFrom	hindawi.com