Bone disease after gastrectomy.
D001847:Bone Diseases / Q000209:etiology*; D002118:Calcium / Q000097:blood; D005743:Gastrectomy / Q000009:adverse effects*; D006801:Humans; D010018:Osteomalacia / Q000209:etiology; D010024:Osteoporosis / Q000209:etiology; D014808:Vitamin D Deficiency / Q000209:etiology
D002118:Calcium