H. J. L. M.
An increasing proportion of the world's population is subjecting itself to a variety of motions in every day life—in ships, trains, cars, elevators, airplanes and "amusement" devices. As an indication of the vast numbers who expose themselves, it may be mentioned that no less than 25 million passengers were carried by the airlines of the world in 1949 (the figure for 1950 does not appear to be yet available).
The great significance of this rapid increase in the number of moving vehicles and the hordes who avail themselves of these conveniences, is that more and more individuals are being introduced
M. HJL. RECENT STUDIES ON THE TREATMENT OF MOTION SICKNESS. Ann Intern Med. ;35:1383–1389. doi: 10.7326/0003-4819-35-6-1383
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Published: Ann Intern Med. 1951;35(6):1383-1389.
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