Recent authors | A (%) | B (%) | AB (%) | O (%) |
Nwangwu Singh (2015) Hussain (2014) Gayatri (2013) Olajevwo (2013) Deepa (2011) Tewodros (2011) Sing et al. (1995) | 24.1 16.1 32.3 16.1 34.6 22.0 23.5 14.3 | 21 40.9 35.3 40.9 23.1 42.0 21.9 11.1 | 5.3 13.0 24.2 8.8 3.9 1.0 3.3 0 | 49.6 25.9 17.7 34.2 38.4 35.0 51.3 13.9 |