https://itk.mitre.org/group_size/2-people/https://itk.mitre.org/group_size/4-people/https://itk.mitre.org/group_size/5-people/https://itk.mitre.org/group_size/6-people/https://itk.mitre.org/group_size/8-people/https://itk.mitre.org/group_size/1/