A spectral sequence on lattice homology
  Using the link surgery formula for Heegaard Floer homology we find a spectral sequence from the lattice homology of a plumbing tree to the Heegaard Floer homology of the corresponding 3-manifold. This spectral sequence shows that for graphs with at most two "bad" vertices, the lattice homology is isomorphic to the Heegaard Floer homology of the underlying 3-manifold. 
Peter Ozsv\'ath, Andr\'as I. Stipsicz and Zolt\'an Szab\'o
math.GT