TY  - RPRT
TI  - Retroversion as a routine gastroscopic maneuver.
AU  - H C Singer
AU  - E J Reichbach
AU  - R R Fagin
AU  - S Kobayashi
PY  - 1971
UR  - https://pubmed.ncbi.nlm.nih.gov/5546137/
ID  - 5546137
ER  -