Update thieme-german.csl (#5710)

Bring in line with most recent guidelines from 2019: 
https://www.thieme.de/statics/dokumente/thieme/final/de/dokumente/sw_%20autorenlounge/ARL_Wiss_Publikation.pdf

thieme-german.csl

@@ -21,6 +21,9 @@
       <name>Christoph Mann</name>
       <email>[email protected]</email>
     </contributor>
+    <contributor>
+      <name>Patrick O'Brien</name>
+    </contributor>
     <category citation-format="numeric"/>
     <category field="medicine"/>
     <summary>Modified version of the "Vancouver Bracket" for Thieme Journals</summary>
@@ -30,18 +33,20 @@
   <locale xml:lang="de">
     <terms>
       <term name="et-al">et al.</term>
+      <term name="internet">im Internet</term>
+      <term name="accessed">Stand</term>
     </terms>
   </locale>
   <macro name="author">
     <names suffix=". " variable="author">
       <name sort-separator=" " name-as-sort-order="all" initialize-with="" et-al-use-first="3" et-al-min="4" delimiter-precedes-last="always"/>
-      <label prefix=" (" form="short" suffix=")"/>
+      <label form="short" prefix=", "/>
     </names>
   </macro>
   <macro name="editor">
     <names suffix=". " variable="editor">
       <name sort-separator=" " name-as-sort-order="all" initialize-with="" delimiter-precedes-last="always" delimiter=", "/>
-      <label prefix=", " form="short"/>
+      <label form="short" prefix=", "/>
     </names>
   </macro>
   <macro name="publisher">
@@ -50,27 +55,28 @@
         <text variable="publisher-place"/>
         <text variable="publisher"/>
       </group>
-      <group>
-        <date variable="issued">
-          <date-part name="year"/>
-        </date>
-      </group>
+      <date variable="issued">
+        <date-part name="year"/>
+      </date>
     </group>
   </macro>
   <macro name="access">
     <choose>
-      <if variable="DOI">
+      <if type="article-journal" match="any">
         <text variable="DOI" prefix="doi:"/>
       </if>
-      <else>
+      <else-if type="webpage post post-weblog" match="any">
         <group delimiter="; ">
-          <group>
-            <text value="Im Internet: "/>
+          <group delimiter=": ">
+            <text term="internet" text-case="capitalize-first"/>
             <text variable="URL"/>
           </group>
-          <date variable="accessed" form="numeric" prefix="Stand: "/>
+          <group delimiter=": ">
+            <text term="accessed"/>
+            <date form="numeric" variable="accessed"/>
+          </group>
         </group>
-      </else>
+      </else-if>
     </choose>
   </macro>
   <macro name="journal-title">
@@ -100,14 +106,14 @@
       <text variable="citation-number"/>
     </layout>
   </citation>
-  <bibliography second-field-align="flush">
+  <bibliography et-al-min="4" et-al-use-first="3" second-field-align="flush">
     <layout vertical-align="baseline" font-variant="normal">
-      <text prefix="[" suffix="]" variable="citation-number" strip-periods="false" vertical-align="baseline" quotes="false" text-case="title"/>
+      <text variable="citation-number" strip-periods="false" quotes="false" vertical-align="baseline" prefix="[" suffix="]"/>
       <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=" ">
+        <if type="bill book graphic legal_case legislation motion_picture report song thesis" match="any">
+          <group delimiter=" ">
             <text macro="edition"/>
             <text macro="publisher"/>
           </group>
@@ -124,10 +130,10 @@
         <else>
           <group delimiter=" ">
             <text macro="journal-title"/>
-            <group delimiter="; ">
-              <date variable="issued" form="numeric" date-parts="year"/>
-              <text variable="volume"/>
-            </group>
+            <date suffix=";" variable="issued">
+              <date-part name="year"/>
+            </date>
+            <text variable="volume"/>
           </group>
           <text prefix=": " variable="page"/>
         </else>