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Determinants of severity at presentation among young patien..:

Viney Gupta ; Rajat M Srivastava ; Ramanjit Sihota...
http://www.ijo.in/article.asp?issn=0301-4738;year=2013;volume=61;issue=10;spage=546;epage=551;aulast=Gupta.  , 2013