(NCC-PC Referral Guidelines for Suspected Cancer  in Adults and Children)

(FitzSimmons and Wardrope)

(Chang and Talbot-Stern 2006)

(Felson 2006)

(LaPrade 2007)

(Calmbach and Hutchens 2003)

(Khaund and Flynn 2005)

(Hixon and Gibbs 2000)