Claim: Josef Mässrur, a Christian Persian missionary to Chinese Turkestan with the Mission Union of Sweden, had previously worked in Yarkand, built a hospital, and trained to be a dentist.
Evidence: Josef Mässrur (born Ghäsim Khan) (also sometimes spelled Josef Messrur) was a Christian Persian missionary to Chinese Turkestan with the Mission Union of Sweden. They worked in Yarkand, where they founded the Mission League's mission station, and later built a hospital. Mässrur also trained to be a dentist. On 5 May 1895, after arriving in Kashgar, he married Anna Nyström, whom he had met in Persia.