Cite
MLA Citation
P Williamson. “Upper airway obstruction. Consider physical signs....” BMJ, vol. 307, no. 6917, 1993, p. 1497. http://access.bl.uk/ark:/81055/vdc_100144468281.0x000033
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P Williamson. “Upper airway obstruction. Consider physical signs....” BMJ, vol. 307, no. 6917, 1993, p. 1497. http://access.bl.uk/ark:/81055/vdc_100144468281.0x000033