| Source | relevant for |
| Faas BHW et al. * | DFR-2 |
| Witter B, thesis* | weak D type 20 |
| Singleton BK et al. Transf. Clin. Biol. 8 (suppl. 1) 2001; 9S* | RHD(1227G>A) RHD(IVS1+1G>A) |
| Tax MGHM Rh variability in multi-ethnic perspective (thesis)* | DAR-E DFV DIII type 6 DIII type 7 weak D type 4.0.1 |
| Wei Q (thesis) Ulm 2006* | DBO-2 DBO-3 |