TransRadial versus transUlnar artery approach for elective invasive percutaneous coronary interventions: a randomized trial on the feasibility and safety with ultrasonographic outcome – RAUL study - Gralak-Lachowska, Dagmara; Lewandowski, Paweł; Maciejewski, Pawel; Ramotowski, Bogumił; Budaj, Andrzej; Stec, Sebastian (Advances in Interventional Cardiology/Postępy w Kardiologii Interwencyjnej, 2020)