I'm currently writing my paper, and I have to compare some DNA sequences. But I found some samples have already been analyzed.
So I used analyzed data from NCBI and my own new data (different species) for the comparison.
Now I want to state clearly that I used their data in my paper. What is the best way to do it?
Should I write their GeneBank accession No. and put the papers in my references?
I'm worried if that is not enough. Should I contact the authors of the paper?