TY  - RPRT
TI  - Vertical control: a multifactorial problem and its clinical implications.
AU  - M N Spyropoulos
AU  - M Askarieh
PY  - 1976
DO  - 10.1016/0002-9416(76)90261-x
UR  - https://pubmed.ncbi.nlm.nih.gov/1066046/
ID  - 1066046
ER  -