I21, I23, J24, D83, O33
D81, D84, I21, I22, O3
and Effects of Psychological, Emotional, Social, and Cognitive Factors. I21 — Analysis of Education.
I21, I20, O33, D91, C93, H24
I22, I28, H52, D72, D83
C93, I21, D91
I21, C93, I28, J24
I21, O15, C93
I21, I25, J24, O15
21, I28, C93, D91, J24