Dentist Christos Naoumis treats a young boy at the Doctors of the World polyclinic in central Athens
Dentist Christos Naoumis treats a young boy at the Doctors of the World polyclinic in central Athens, Greece, October 27, 2015. Picture taken October 27, 2015. To match Special Report GREECE-TEETH/ REUTERS/Alkis Konstantinidis