TY  - RPRT
TI  - Single- and double-contrast techniques in esophagitis.
AU  - R E Koehler
AU  - P J Weyman
AU  - H F Oakley
PY  - 1980
DO  - 10.2214/ajr.135.1.15
UR  - https://pubmed.ncbi.nlm.nih.gov/6771981/
ID  - 6771981
ER  -