PT - JOURNAL ARTICLE AU - M. H. Gordon TI - The Filter-Passer of Influenza AID - 10.1136/jramc-40-04-13 DP - 1923 Apr 01 TA - Journal of the Royal Army Medical Corps PG - 317--320 VI - 40 IP - 4 4099 - http://militaryhealth.bmj.com/content/40/4/317.short 4100 - http://militaryhealth.bmj.com/content/40/4/317.full SO - J R Army Med Corps1923 Apr 01; 40