Fondell E, Lagerros YT, Sundberg CJ, Lekander M, Balter O, Rothman KJ, Balter K. Physical activity, stress, and self-reported upper respiratory tract infection. Med Sci Sports Exerc. 2011 Feb 1;43(2):272-9.
Martin AV, Coffield K. Hemophilia: information for educators and communication disorders specialists. Poster presented at the American Speech-Language-Hearing Association; April 1997. [abstract] Perspect Lang Learn Educ. 1997 Apr; 4:13-5.