TY  - RPRT
TI  - "Head and shoulder" maneuver.
AU  - R A Welch
PY  - 1997
DO  - 10.1016/s0002-9378(97)70419-8
UR  - https://pubmed.ncbi.nlm.nih.gov/9166182/
ID  - 9166182
ER  -