[A survey of the environment of children who were found to have difficulty in toilet training at the health examination at age 3].
K
K
Isogai
H
H
Kurahashi
K
K
Osuga
S
S
Kojima
H
H
Takayama
D002675:Child, Preschool; D006801:Humans; D012931:Social Environment; D014039:Toilet Training