diff --git a/README.md b/README.md
index 516df218d56b9292fee4e91db4c66622d5c9bf0d..cfa4b3b9475c09862e92ac3051c702ff903b212e 100644
--- a/README.md
+++ b/README.md
@@ -37,15 +37,16 @@
         - https://www.bostonglobe.com/2020/04/23/nation/tech-out-mit-may-allow-caregivers-monitor-coronavirus-patients-distance/
     - ? Zach pulse oximeter
         - https://gitlab.cba.mit.edu/pub/coronavirus/tracking/-/issues/42
+    - David
+        - https://www.crr.columbia.edu/research/using-power-light-preventing-airborne-spread-coronavirus-and-influenza-virus
+        - https://www.nature.com/articles/s41598-018-21058-w.pdf
     - Kohshi, Alfonso
     - Juanma, Carlos, Alvaro
         - https://www.airbus.com/
     - Alex
         - https://www.dupont.com/brands/tyvek.html
-    - Karina
+    - ? Karina
         - https://www.makersforcovid19.com/
-    - ? David
-        - UVC
     - ? Bruce
         - https://www.ragoninstitute.org/
     - Ane
@@ -83,9 +84,6 @@
     - Jonathan
         - higher-resolution simulation
         - other modeling needs?
-    - (David)
-        - https://www.crr.columbia.edu/research/using-power-light-preventing-airborne-spread-coronavirus-and-influenza-virus
-        - https://www.nature.com/articles/s41598-018-21058-w.pdf
     - Max
         - https://formlabs.com/
         - https://formlabs.com/covid-19-response/