Allen RM, Granger AL, Dykstra LA. The competitive N-methyl-D-aspartate receptor antagonist (-)-6-phosphonomethyl-deca-hydroisoquinoline-3-carboxylic acid (LY235959) potentiates the antinociceptive effects of opioids that vary in efficacy at the mu-opioid receptor. J Pharmacol Exp Ther. 2003 Nov 1;307(2):785-92.
Allen RM, Granger AL, Dykstra LA. Dextromethorphan potentiates the antinociceptive effects of morphine and the delta-opioid agonist SNC80 in squirrel monkeys. J Pharmacol Exp Ther. 2002 Feb 1;300(2):435-41.
Loughlin JE, Cole JA, Rothman KJ, Johnson ES. Prevalence of serious eosinophilia and incidence of Churg-Strauss syndrome in a cohort of asthma patients. Ann Allergy Asthma Immunol. 2002 Jan 1;88(3):319-25.
Pearlman DS, Stricker W, Weinstein S, Gross G, Chervinsky P, Woodring A, Prillaman B, Shah T. Inhaled salmeterol and fluticasone: a study comparing monotherapy and combination therapy in asthma. Ann Allergy Asthma Immunol. 1999 Mar;82(3):257-65. doi: 10.1016/S1081-1206(10)62606-3