Contents

#### **Preface XI**


Chapter 7 **Epidemiology of Vitamin B12 Deficiency 103** Tekin Guney, Aysun Senturk Yikilmaz and Imdat Dilek

#### Chapter 8 **β-Thalassemia: Genotypes and Phenotypes 113** Tamer Hassan, Mohamed Badr, Usama El Safy, Mervat Hesham, Laila Sherief and Marwa Zakaria
