• Beri-Beri di Tanah Melayu (1880-1910)

1861: Dilahirkan.

1884: Selesai pengajian perubatan di Guy's Hospital:-

• “Braddon qualified in medicine at Guy's Hospital in 1884;” (Wellcome Collection: |"Braddon, William Leonard (1861-1935)").

• “W Leonard Braddon was the son of a doctor in Upton-on-Severn, England. He received his early education at Owens College, Manchester and undertook his medical training at Guy’s Hospital, London, obtaining his MRCS in 1884 and his fellowship for surgery from the Royal College of Surgeons of England the next year.” (Lim Kean Ghee, 2016: |"THE HISTORY OF MEDICINE AND HEALTH IN MALAYSIA", m.s.55).

1887: Memperolehi ijazah MBBS dari University of London: “He graduated with an MBBS from the University of London in 1887. A distinguished student, he gained a scholarship and won a gold medal for forensic medicine.” (Lim Kean Ghee, 2016: |"THE HISTORY OF MEDICINE AND HEALTH IN MALAYSIA", m.s.55).

1887-09-10: Sebelumnya ahli tentera sukarelawan Worchestershire Regiment, menjadi Acting Surgeon: “2nd Volunteer Battalion, the Worcestershire Regiment ^ William Leonard Braddon, M.B., to be Acting Surgeon. Dated 10th September, 1887.” (The London Gazette, 9 September 1887, Issue 25737, Page 4888: |"The London Gazette").

1888: Menyertai perkhidmatan perubatan di Selangor, kemudiannya dilantik menjadi State Surgeon, Negeri Sembilan: “He initially joined his father’s practice but a roving spirit led him abroad on several voyages. This resulted in him joining the medical services of the Malay States in Selangor in 1888. However, most of his career was in service as State Surgeon in Negeri Sembilan.” (Lim Kean Ghee, 2016: |"THE HISTORY OF MEDICINE AND HEALTH IN MALAYSIA", m.s.55).

1900: Masih sebagai State Surgeon, Negeri Sembilan, bertugas di Hospital Besar Seremban: “Dr SHR Lucy in State Surgeon in Selangor reported in 1900 that ‘praise is due to them for the way they have met this press of work: at the same time, it is impossible, with the present staff to do justice to the patients”. The same year, Dr WL Braddon, State Surgeon in Negeri Sembilan wrote ‘The apothecary at Seremban General Hospital is quite useless… but I have no qualified assistant upon whom I can place any reliance’. He found his dressers, all of whom were unqualified ‘proved capable of learning and deserving promotion’. Almost all of these subordinate staff were Asian or Eurasian.” (Lim Kean Ghee, 2016: |"THE HISTORY OF MEDICINE AND HEALTH IN MALAYSIA", m.s.44).

1906: Terlibat dalam vaksinasi cacar di Negeri Sembilan: “Smallpox was a major disease in this region, and outbreaks were often deadly. … Dr Braddon in Negeri Sembilan came up with the idea to engage schoolmasters to promote and perform vaccinations. By 1906, two-thirds of the vaccinations in Negeri Sembilan were carried out by Malay schoolteachers.” (Lim Kean Ghee, 2016: |"THE HISTORY OF MEDICINE AND HEALTH IN MALAYSIA", m.s.30).

?-1907: Sebagai District Surgeon, “… after some years working in partnership with his father in Upton-on-Severn, he made several voyages as a ship's medical officer, and eventually settled in Malaya as a district surgeon. He took an interest in tropical diseases and made important early observations on the aetiology of beriberi, associating it with the inclusion of polished rice in the diet, publishing The cause and prevention of beri-beri (London: Rebman) in 1907, an achievement recognised by the award of the Stewart Research Prize of the British Medical Association in 1912. However, he was edged out of this medical position in the Colonial Service in 1908, and became a successful rubber planter, although retaining his interest in beriberi. He joined the RAMC during the First World War, but afterwards continued as a rubber planter in the Federated Malay States until his death. As a friend and colleague of Sir Charles Martin, he persuaded to him take the work on beriberi further through experimental investigation at the Lister Institute, leading to the discovery by Casimir Funk of the causation of the disease in the dietary deficiency of elements found in unpolished rice but removed in processing. There is an obituary in The Lancet, 28 Nov 1936, p 1304, and an entry in Plarr's Lives of the Fellows of the Royal College of Surgeons, 1930-1951, and a biographical article E Wylie, “The search for the cause of beriberi in the Malay peninsula: the contribution of Dr. W. L. Braddon”, Journal of the Malaysian Branch of the Royal Asiatic Society, Vol 61, 1988, pp 93-122. Braddon's place in the overall development of understanding of the aetiology of beriberi is analysed in David W. Fraser, “Vitamins and Vitriol: W. L. Braddon's Epidemiology of Beriberi”, American Journal of Epidemiology, Volume 148 Number 6 September 15, 1998, pp 519-527” (Wellcome Collection: |"Braddon, William Leonard (1861-1935)").

1908: Bersara dari perkhidmatan, dan menjadi peladang di Negeri Sembilan: “Braddon himself was sidelined and retired in 1908 to become a planter in Negeri Sembilan.” (Lim Kean Ghee, 2016: |"THE HISTORY OF MEDICINE AND HEALTH IN MALAYSIA", m.s.54).