Kabir, A. H.; Islam, M. R.; Biswas, P. K.; Alam, M. S.; Mondal, S. K.; Karim, M. E.; Azhar, M. Aetiological Pattern of Premature Ventricular and Atrial Complexes and Their Consequence on Morbidity and Mortality. J. Medicine 2015, 16, 97-102.