Hoechst AG market Arsphenamine under the trade nameSalvarsan, the first organic antisyphilitic, its properties having been discovered the previous fall by bacteriologist Sahachiro Hata during systematic testing in the laboratory of Paul Ehrlich; it rapidly becomes the world's most widely prescribed drug.[2]
May 18 – At the annual meeting of the American Association for the Study of the Feeble-Minded, Henry H. Goddard introduces a system for classifying individuals with mental retardation based on intelligence quotient (IQ): moron for those with an IQ of 51–70, imbecile for those with an IQ of 26–50, and idiot for those with an IQ of 0-25.
^Fahn, S. (2008). "The history of dopamine and levodopa in the treatment of Parkinson's disease". Movement Disorders. 23 Suppl 3: S497–508. doi:10.1002/mds.22028. PMID18781671. S2CID45572523.
^Berchtold, N. C.; Cotman, C. W. (1998). "Evolution in the conceptualization of dementia and Alzheimer's disease: Greco-Roman period to the 1960s". Neurobiology of Aging. 19 (3): 173–89. doi:10.1016/S0197-4580(98)00052-9. PMID9661992. S2CID24808582.
^Jacobaeus, Hans Christian (1911). "The Possibilities for Performing Cystoscopy in Examinations of Serous Cavities". Münchner Medizinischen Wochenschrift.
^Hatzinger, Martin; et al. (4 December 2006). "Hans Christian Jacobaeus: Inventor of Human Laparoscopy and Thoracoscopy". Journal of Endourology. 20 (11): 848–850. doi:10.1089/end.2006.20.848. PMID17144849.