| First round PCR | EHR1 (Forward) | 5’-GAACGAACGCTGGCGGCAAGC-3’ |
| EHR2 (Reverse) | 5’-AGTA(T/C)CG(A/G)ACCAGATAGCCGC-3’ | |
| Second round PCR | EHR3 (Forward) | 5’-TGCATAGGAATCTACCTAGTAG-3’ |
| EHR4 (Reverse) | 5’-CTAGGAATTCCGCTATCCTCT-3’ |