Abstract:
The following primary record-reporting documents were taken as sources of
study of children's diseases: card-questionnaires of children and adolescents who
are engaged in chess and checkers, children's medical card (form No. 026/х) and
developmental history (form No. 112/х ) were considered the subject of the study.
The obtained data were recorded in a specially developed "Card for the study of
diseases of children involved in chess".
