title: AN EXAMINATION OF THE THEOREM OF ALLEN HAZEN THAT FOR EVERY DEATH FROM TYPHOID FEVER AVOIDED BY THE PURIFICATION OF PUBLIC WATER SUPPLIES TWO OR THREE DEATHS ARE AVOIDED FROM OTHER CAUSES.
authors.forename: W T
authors.initials: WT
authors.lastname: Sedgwick
authors.forename: S
authors.initials: S
authors.lastname: Macnutt