diff --git a/brain.csl b/brain.csl
deleted file mode 100644
index b7a5e933c1fa..000000000000
--- a/brain.csl
+++ /dev/null
@@ -1,188 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<style xmlns="http://purl.org/net/xbiblio/csl" class="in-text" version="1.0" demote-non-dropping-particle="sort-only" page-range-format="minimal" default-locale="en-GB">
-  <info>
-    <title>Brain</title>
-    <id>http://www.zotero.org/styles/brain</id>
-    <link href="http://www.zotero.org/styles/brain" rel="self"/>
-    <link href="https://academic.oup.com/brain/pages/General_Instructions" rel="documentation"/>
-    <author>
-      <name>Rintze Zelle</name>
-      <uri>http://twitter.com/rintzezelle</uri>
-    </author>
-    <contributor>
-      <name>Patrick O'Brien</name>
-      <email>https://twitter.com/patobrien333</email>
-    </contributor>
-    <category citation-format="author-date"/>
-    <category field="medicine"/>
-    <issn>0006-8950</issn>
-    <eissn>1460-2156</eissn>
-    <updated>2019-02-25T13:10:28+00:00</updated>
-    <rights license="http://creativecommons.org/licenses/by-sa/3.0/">This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 License</rights>
-  </info>
-  <macro name="author-short">
-    <names variable="author">
-      <name form="short" and="text" delimiter=", " initialize-with=". " delimiter-precedes-last="never"/>
-      <et-al font-style="italic"/>
-      <substitute>
-        <names variable="editor"/>
-        <names variable="translator"/>
-        <choose>
-          <if type="bill book graphic legal_case legislation motion_picture report song" match="any">
-            <text variable="title" form="short" font-style="italic"/>
-          </if>
-          <else>
-            <text variable="title" form="short" quotes="true"/>
-          </else>
-        </choose>
-      </substitute>
-    </names>
-  </macro>
-  <macro name="issued-year">
-    <choose>
-      <if variable="issued">
-        <group>
-          <date variable="issued">
-            <date-part name="year"/>
-          </date>
-          <text variable="year-suffix" font-style="italic"/>
-        </group>
-      </if>
-      <else>
-        <text term="no date" form="short"/>
-      </else>
-    </choose>
-  </macro>
-  <macro name="citation-locator">
-    <group>
-      <label variable="locator" form="short"/>
-      <text variable="locator" prefix=" "/>
-    </group>
-  </macro>
-  <macro name="author">
-    <names variable="author" suffix=". ">
-      <name sort-separator=" " initialize-with="" name-as-sort-order="all" delimiter=", " delimiter-precedes-last="always"/>
-    </names>
-  </macro>
-  <macro name="editor">
-    <names variable="editor" suffix=", editor(s). ">
-      <name sort-separator=" " initialize-with="" name-as-sort-order="all" delimiter=", " delimiter-precedes-last="always"/>
-    </names>
-  </macro>
-  <macro name="publisher">
-    <group delimiter="; ">
-      <group delimiter=": ">
-        <text variable="publisher-place"/>
-        <text variable="publisher"/>
-      </group>
-      <date variable="issued">
-        <date-part name="year"/>
-      </date>
-    </group>
-  </macro>
-  <macro name="access">
-    <choose>
-      <if variable="URL">
-        <choose>
-          <if variable="page" match="none">
-            <group delimiter=" ">
-              <group prefix="[" suffix="]" delimiter=" ">
-                <text term="cited"/>
-                <date variable="accessed">
-                  <date-part name="year"/>
-                  <date-part name="month" prefix=" " form="short" strip-periods="true"/>
-                  <date-part name="day" prefix=" "/>
-                </date>
-              </group>
-              <group>
-                <text value="Available from: "/>
-                <text variable="URL"/>
-              </group>
-            </group>
-          </if>
-        </choose>
-      </if>
-    </choose>
-  </macro>
-  <macro name="title">
-    <group delimiter=" ">
-      <text variable="title"/>
-      <choose>
-        <if variable="URL">
-          <choose>
-            <if variable="page" match="none">
-              <text term="internet" prefix="[" suffix="]" text-case="capitalize-first"/>
-            </if>
-          </choose>
-        </if>
-      </choose>
-    </group>
-  </macro>
-  <macro name="edition">
-    <choose>
-      <if is-numeric="edition">
-        <group delimiter=" ">
-          <number variable="edition" form="ordinal"/>
-          <text term="edition" form="short"/>
-        </group>
-      </if>
-      <else>
-        <text variable="edition" suffix="."/>
-      </else>
-    </choose>
-  </macro>
-  <citation et-al-min="3" et-al-use-first="1" disambiguate-add-year-suffix="true" collapse="year-suffix" year-suffix-delimiter=", ">
-    <sort>
-      <key macro="issued-year"/>
-      <key macro="author-short"/>
-    </sort>
-    <layout prefix="(" suffix=")" delimiter="; ">
-      <group delimiter=", ">
-        <text macro="author-short"/>
-        <text macro="issued-year"/>
-        <text macro="citation-locator"/>
-      </group>
-    </layout>
-  </citation>
-  <bibliography et-al-min="7" et-al-use-first="6">
-    <sort>
-      <key macro="author"/>
-      <key variable="issued"/>
-    </sort>
-    <layout>
-      <text macro="author"/>
-      <text macro="title" suffix=". "/>
-      <choose>
-        <if type="bill book graphic legal_case legislation motion_picture report song" match="any">
-          <group prefix=" " delimiter=" ">
-            <text macro="edition"/>
-            <text macro="publisher"/>
-          </group>
-        </if>
-        <else-if type="chapter paper-conference" match="any">
-          <group delimiter=". ">
-            <group prefix=" ">
-              <text term="in" suffix=": " text-case="capitalize-first"/>
-              <text macro="editor"/>
-              <text variable="container-title"/>
-            </group>
-            <text macro="publisher"/>
-            <group delimiter=" ">
-              <label plural="never" variable="page" form="short"/>
-              <text variable="page"/>
-            </group>
-          </group>
-        </else-if>
-        <else>
-          <text variable="container-title" form="short" strip-periods="true"/>
-          <date variable="issued" prefix=" ">
-            <date-part name="year"/>
-          </date>
-          <text variable="volume" prefix="; "/>
-          <text variable="page" prefix=": " suffix="."/>
-        </else>
-      </choose>
-      <text macro="access"/>
-    </layout>
-  </bibliography>
-</style>
diff --git a/dependent/brain.csl b/dependent/brain.csl
new file mode 100644
index 000000000000..81b207a38151
--- /dev/null
+++ b/dependent/brain.csl
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<style xmlns="http://purl.org/net/xbiblio/csl" version="1.0" default-locale="en-US">
+  <info>
+    <title>Brain</title>
+    <id>http://www.zotero.org/styles/brain</id>
+    <link href="http://www.zotero.org/styles/brain" rel="self"/>
+    <link href="http://www.zotero.org/styles/american-medical-association" rel="independent-parent"/>
+    <link href="https://academic.oup.com/brain/pages/General_Instructions" rel="documentation"/>
+    <category citation-format="numeric"/>
+    <category field="medicine"/>
+    <issn>0006-8950</issn>
+    <eissn>1460-2156</eissn>
+    <updated>2021-07-08T21:58:08+00:00</updated>
+    <rights license="http://creativecommons.org/licenses/by-sa/3.0/">This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 License</rights>
+  </info>
+</style>
diff --git a/discovery-medicine.csl b/discovery-medicine.csl
index f44b5492e564..ae1d7a0e6682 100644
--- a/discovery-medicine.csl
+++ b/discovery-medicine.csl
@@ -5,7 +5,6 @@
     <title-short>DM</title-short>
     <id>http://www.zotero.org/styles/discovery-medicine</id>
     <link href="http://www.zotero.org/styles/discovery-medicine" rel="self"/>
-    <link href="http://www.zotero.org/styles/brain" rel="template"/>
     <link href="http://www.discoverymedicine.com/about/information-for-authors-of-discovery-medicine/" rel="documentation"/>
     <author>
       <name>Patrick O'Brien, PhD</name>