Data collection and follow‐up
EVENTS
Independent research personnel prospectively collected clinical, angiographic, procedural, and outcome data using a reporting system. Clinical follow‐up was undertaken at 1, 6, and 12 months via office visits, medical record reviews, or telephone interviews. Data regarding patients' clinical status, all interventions, and outcome events were recorded at every visit. However, routine follow‐up angiography was not mandatorily performed.