I am looking for a very specific information, but I was unable to find it anywhere. Can you help me? Is there a review in the literature addressing how the proportion of metagenomics-based and 16S-based (gut) microbiome studies changed during the last decade? I am looking for something like this, but this is not ideal because there they focused on NIH-funded studies and they merged 16S+metagenomics when evaluating trends in types of methodology.
Thanks in advance,