Annulus twist and diffeomorphic 4-manifolds II
  We solve a strong version of Problem 3.6 (D) in Kirby's list, that is, we show that for any integer $n$, there exist infinitely many mutually distinct knots such that $2$-handle additions along them with framing $n$ yield the same $4$-manifold. 
Tetsuya Abe, In Dae Jong
math.GT