Puruckherr M, Gupta K, Youngberg G, Krishnaswamy G, Roy T
Department of Internal Medicine, James H. Quillen College of Medicine, East Tennessee State University, Johnson City 37604, USA.
Ann Allergy Asthma Immunol. 2001 Aug;87(2):113-6. doi: 10.1016/S1081-1206(10)62203-X.