diff --git a/etc/affiliationmatchers.json b/etc/affiliationmatchers.json
index e5f1dfc3f..afedaeefb 100644
--- a/etc/affiliationmatchers.json
+++ b/etc/affiliationmatchers.json
@@ -133,6 +133,9 @@
     "di": {
         "weak": true, "nameish": true
     },
+    "md": {
+        "weak": true
+    },
     "jr": {
         "weak": true, "nameish": true
     },
@@ -752,12 +755,18 @@
     "msr": {
         "alternate": ["microsoft research"]
     },
+    "nau": {
+        "alternate": ["northern arizona university"]
+    },
     "ncsu": {
         "alternate": ["north carolina state university"]
     },
     "nist": {
         "alternate": ["national institute standards technology"]
     },
+    "northern": {
+        "sync": ["arizona", "illinois"]
+    },
     "nus": {
         "alternate": ["national university singapore"]
     },