About: http://webisa.webdatacommons.org/450864230

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	Each of these extensions is described below.Multilevel Mediation ModelsMany studies measure data clustered at several levels, such as individuals in schools, classrooms, therapy groups, or clinics.
http://www.w3.org/ns/prov#wasQuotedFrom	pubmedcentralcanada.ca