TY - JOUR TI - Can a city population represent a whole country? Essentials of study design for epidemiologic studies/Serum lipid profiles including non-high density lipoprotein cholesterol levels in Turkish school-children AU - Yokuşoğlu, M. AU - Uzun, M. AU - Baysan, O. JO - The Anatolian Journal of Cardiology PY - 2008 VL - 8 SP - 174 EP - 175 DO - ER -