RT Journal Article SR Electronic T1 Small-Pox and Aƫrial Infection JF British Medical Journal JO BMJ FD British Medical Journal Publishing Group SP 946 OP 946 DO 10.1136/bmj.1.1841.946-b VO 1 IS 1841 A1 Wilson, Edward T. YR 1896 UL http://www.bmj.com/content/1/1841/946.3.abstract AB