Update duckdb index files

.gitattributes

@@ -59,3 +59,4 @@ Cell_Biology_Alberts/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Histology_Ross/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Gynecology_Novak/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Immunology_Janeway/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+Pediatrics_Nelson/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

Pediatrics_Nelson/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:84c609ba8485202f554b419f22fcecc3878e7b2c262ae4ba10b3114ddb50753f
+size 8663040