H. Zeplin

Transcatheter closure of large atrial septal defects with the Babic system.

R. Ensslen, H. Sievert, D. Scherer, 1995, Catheterization and cardiovascular diagnosis.

A randomized trial comparing the impact of a nonionic (Iomeprol) versus an ionic (Ioxaglate) low osmolar contrast medium on abrupt vessel closure and ischemic complications after coronary angioplasty.

R. Ensslen, H. Sievert, R. Schräder, 1999, Journal of the American College of Cardiology.

Cardiac perforation following transcatheter PFO closure

H. Sievert, U. Krumsdorf, K. Billinger, 2003, Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions.

-Occlusion of atrial septal defect with a new occlusive device-.

R. Ensslen, H. Sievert, P. Osypka, 1996, Zeitschrift fur Kardiologie.

Granulocyte elastase release during extracorporeal oxygenation: effects of bubble, membrane, and hollow fiber oxygenators

H. Greiling, B. Messmer, R. Reinards, 1992 .