Letter: Efficacy of long-acting nitrates. I. sublingual versus oral administration.
D000284:Administration, Oral; D000787:Angina Pectoris / Q000517:prevention & control*; D000818:Animals; D004285:Dogs; D006801:Humans; D008658:Inactivation, Metabolic; D009566:Nitrates / Q000008:administration & dosage*; D014059:Tongue
D009566:Nitrates