Macrocytic anemia may be seen in all of these except-
Copper deficiency is manifested by hypochromic normocytic anemia, osteopenia, depigmentation, mental retardation and psychomotor abnormalities.
Thiamine, pyridoxine and Bl2 deficiency leads to megaloblastic anemia.
Classification of megaloblastic anemia
Liver disease
Copper deficiency
Thiamine deficiency
Vitamin B12 deficiency