Arterial stenting and balloon angioplasty in ostial atherosclerotic renovascular disease: a randomised trial. - van de Ven,P.J.; Kaatee,R.; Beutler,J.J.; Beek,F.J.; Woittiez,A.K.; Buskens,E.; Koomans,H.A.; Mali,W.P. (Lancet, 1999)