S. Das, S. K. Ray, S. Bhattacharya, K. Chatterjee, P. K. Mandal, and S. Sen, “Coronary artery diameter measurement and Z-score regression equation calculation: a comparative study between Indian children between one to five years residing in and around Kolkata with children of South-East Asia and Western population”, Int J Contemp Pediatr, vol. 4, no. 2, pp. 403–410, Feb. 2017.