claim: Doxycycline may cause teeth to change color in children.
evidence: Rai Bahadur Daya Ram Sahni CIE -LRB- 16 December 1879 -- 7 March 1939 -RRB- was an Indian archaeologist who supervised the excavation of the Indus valley site at Harappa in 1921-22 .. Rai Bahadur. Rai Bahadur. CIE. Order of the Indian Empire. Harappa. Harappa. archaeologist. archaeologist. Indus valley site. Indus Valley Civilization. A protege of John Marshall , in 1931 , Sahni became the first Indian to be appointed Director-General of the Archaeological Survey of India -LRB- ASI -RRB- , a position in which he served till 1935 .. India. India. John Marshall. John Marshall ( archaeologist ). Archaeological Survey of India. Archaeological Survey of India