1. Clinical and Epidemiological Research Laboratory, Lebanese University Faculty of Pharmacy, Ramlet al-Bayda, Lebanon
2. Environmental Health Department, National Institute of Health Dr Ricardo Jorge, Porto, Portugal
3. EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
4. INSPECT-LB, Institut National de Santé Publique d'Epidémiologie Clinique et de Toxicologie-Liban, Beirut, Lebanon
5. Lebanese University Faculty of Pedagogy, Beirut, Lebanon