Because a few medical articles use/d gene transfer when they meant gene therapy (I corrected some to match their refs,
and put a hatnote on HGT)
I was tempted to make this a disam :
Gene transfer can ref to :
- Horizontal_gene_transfer, a natural process
- Gene therapy
- Gene delivery, part of Gene therapy
- Genetic engineering
but didnt have time to check the many of what links here - Rod57 (talk) 14:17, 14 January 2016 (UTC)