types of anaemia and their causesmacrocytic anaemia causesreasons for anaemia in elderlymacrocytic normochromic anaemiahypothyroidism macrocytic anaemiamacrocytic hypochromic anaemiamacrocytic anaemia alcoholnon megaloblastic anaemiamicrocytic hypochromic anaemia causesmacrocytic anemia symptomscauses of anemia in elderlysigns of pernicious anemia