“…Most of the studies in Northern India, (Chandra et al, 12 Garg et al, 13 Singh P et al, 14 Singh S et al 15 ), Western India (Giri et al, 16 Behra et al 17 and Arya et al 18 ) and Central India (Chaurasia et al 6 ), showed B blood group as the commonest blood group, similar to our study. (Table 3) In contrast, studies done in Southern India (Suresh et al, 19 John et al 20 ) and Eastern India (Nag et al, 21 Badge et al 11 ) showed O group to be the commonest blood group. Thus, in the studies done in most parts of India the commonest blood group is either B or O followed by A and then AB.…”