. 2019 Apr 24;12(1):12. doi: 10.1186/s12052-019-0103-4

Table 1.

Composition of study groups

Group	Class—teacher	Number of students per class	Total number of students per group
1	A—Teacher MH	19	41
1	B—Teacher SS	22	41
2	C—Teacher SS	18	37
2	D—Teacher SS	19	37