diff --git a/inst/config.yml b/inst/config.yml
index 6ba24ff..7871bde 100644
--- a/inst/config.yml
+++ b/inst/config.yml
@@ -206,12 +206,12 @@ pec:
       - "path"
       - "parent"
       - "fileFormat"
-      - "program"
       - "project"
       - "study"
       - "resourceType"
+      - "timepoint"
+      - "age_in_days"
     individual:
-      - "program"
       - "project"
       - "study"
       - "individualID"
@@ -222,7 +222,6 @@ pec:
       - "noOfAdults"
       - "spokenLanguage"
     biospecimen:
-      - "program"
       - "project"
       - "study"
       - "person"
@@ -231,3 +230,10 @@ pec:
       - "specimenType"
       - "samplingAge"
       - "samplingAgeUnits"
+      - "ageStartingSolidFood"
+      - "ageStartingSolidFoodUnits"
+      - "breastfed"
+      - "formulafed"
+      - "formulaName"
+      - "antibioticUse"
+      - "antibioticName"