TY  - RPRT
TI  - Aids to insertion: magnetic imaging, variable stiffness, and overtubes.
AU  - Syed G Shah
AU  - Brian P Saunders
PY  - 2005
DO  - 10.1016/j.giec.2005.08.011
UR  - https://pubmed.ncbi.nlm.nih.gov/16278132/
ID  - 16278132
ER  -