★ 6.2
★ 7.8
★ 7.5
★ 5.7
★ 2.0
★ 7.9
★ 7.0
★ 7.3
★ 5.0
★ 7.4
★ 7.2
★ 0.0
★ 2.5
★ 6.9
★ 3.5
★ 5.5
A doctor explains to his children the dangers of tuberculosis, what it is and how to prevent against contracting it.
