Haq, T. S., N. A. H. Chowdhury, A. M. Khan, J. Hossain, and F. T. N. Malik. “Percutaneous Closure of Acquired Hole- First Case Report from Bangladesh”. Bangladesh Heart Journal, vol. 35, no. 2, Apr. 2021, pp. 155-8, doi:10.3329/bhj.v35i2.52903.