diff --git a/ontology/obcs.md b/ontology/obcs.md
index 0bb4f0c33..d92a8ac7a 100644
--- a/ontology/obcs.md
+++ b/ontology/obcs.md
@@ -3,7 +3,7 @@ layout: ontology_detail
 id: obcs
 title: Ontology of Biological and Clinical Statistics
 contact:
-  email: jiezheng@pennmedicine.upenn.edu
+  email: jiezhen@med.umich.edu
   github: zhengj2007
   label: Jie Zheng
   orcid: 0000-0002-2999-0103
@@ -12,8 +12,8 @@ domain: information technology
 homepage: https://github.com/obcs/obcs
 in_foundry: false
 license:
-  label: CC BY 3.0
-  url: http://creativecommons.org/licenses/by/3.0/
+  label: CC BY 4.0
+  url: http://creativecommons.org/licenses/by/4.0/
 preferredPrefix: OBCS
 products:
 - id: obcs.owl
@@ -21,6 +21,12 @@ repository: https://github.com/obcs/obcs
 tags:
 - statistics
 tracker: https://github.com/obcs/obcs/issues
+usages:
+- description: The Ontology of Biological and Clinical Statistics (OBCS)-based statistical method standardization and meta-analysis of host responses to yellow fever vaccines
+  examples:
+  - description: In Methods, "Both OBCS and the Vaccine Ontology (VO) were used to ontologically model various components and relations ..."
+    url: https://doi.org/10.1007/s40484-017-0122-5
+  user: https://doi.org/10.1007/s40484-017-0122-5
 activity_status: active
 ---