This was indeed published in 97'. This means there have been more research since then & despite the benefits of nicotine research we still have a ways to go. People demonize the mere mention of nicotine, because they associate it with cigarettes. These studies are good news. Someone stepped up to the plate and did some tests despite popular opinion & found some benefits. There are more articles being posted in medical journal each year as a result. Here is one from this year:
Nicotine shows potential medical benefits
I have more if you would like to read them.