.navbar .collapse { display: block; } .mobile-nav { max-height: none !important; } @media screen and (min-width: 1200px) { .navbar #basic-navbar-nav .navbar-nav { position: static !important; } }

Use of an Intravenous Contrast Agent (Optison) to Enhance Echocardiography: Efficacy and Cost Implications

September 25, 1998

Leslee J. Shaw, PhD, Linda Gillam, MD, Steven Feinstein, MD, John Dent, MD, Gary Plotnick, MD, for the Optison Multicenter Study Group

The American Journal of Managed Care, September 1998 - Special Issue, Volume 4, Issue 2 SP