Is the U.S. stock market in bubble territory? It's not easy to know, but there are still some easy answers for those on the lookout for "bubble-proof" healthcare stocks. And they can still win you some great returns. Abbott Laboratories, Teladoc Health, and CRISPR Therapeutics are three stocks that neatly fit the bill. Let's dive in to see what makes this diagnostics giant, telehealth leader, and cutting-edge genetic therapy company my top picks for February.