[1] Natl Inst Hlth, Dept Environm & Primary Prevent, Rome, Italy
[2] Univ Roma Tor Vergata, Dept Expt Med & Surg, Via Montpellier 1, I-00133 Rome, Italy
[3] Catholic Univ Our Lady Good Counsel, Tirana, Albania
[4] Univ Hosp Mother Tereza, Serv Pediat, Tirana, Albania
[5] Univ Roma Tor Vergata, Dept Clin Sci & Translat Med, Rome, Italy