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Pinkernelle JG, Teichgräber UK, Born C, Ricke J, Felix R.Pinkernelle JG, et al. Among authors: felix r.Rofo. 2002 Jun;174(6):747-53. doi: 10.1055/s-2002-32224.Rofo. 2002.PMID: 12063606German.
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Teichgräber UK, Ehrenstein T, Lemke M, Liebig T, Stobbe H, Hosten N, Keske U, Felix R.Teichgräber UK, et al. Among authors: felix r.Rofo. 1999 Nov;171(5):396-9. doi: 10.1055/s-1999-11094.Rofo. 1999.PMID: 10619043German.
Puls R, Hosten N, Lemke M, Teichgraber UK, Steinkamp HK, Felix R.Puls R, et al. Among authors: felix r.J Ultrasound Med. 2000 Dec;19(12):817-21. doi: 10.7863/jum.2000.19.12.817.J Ultrasound Med. 2000.PMID: 11127005
Stroszczynski C, Gaffke G, Gretschel S, Rambow A, Jost D, Schlecht I, Schneider U, Schicke B, Hohenberger P, Gebauer B, Felix R.Stroszczynski C, et al. Among authors: felix r.Rofo. 2003 Oct;175(10):1368-75. doi: 10.1055/s-2003-42887.Rofo. 2003.PMID: 14556106German.
Knollmann F, Schimpf K, Felix R.Knollmann F, et al. Among authors: felix r.Rofo. 2004 Jun;176(6):880-4. doi: 10.1055/s-2004-812969.Rofo. 2004.PMID: 15173984German.