[Folic acid deficiency--a frequent observation in the aged].

@article{Schlettweingsell1970FolicAD,
  title={[Folic acid deficiency--a frequent observation in the aged].},
  author={D Schlettwein-gsell},
  journal={Hippokrates},
  year={1970},
  volume={41 4},
  pages={524-5}
}