#include "RecoVertex/GaussianSumVertexFit/interface/GsfVertexMerger.h"
#include "TrackingTools/GsfTools/interface/KullbackLeiblerDistance.h"
#include "TrackingTools/GsfTools/interface/CloseComponentsMerger.h"
#include "DataFormats/Common/interface/Handle.h"
#include "RecoVertex/VertexPrimitives/interface/VertexException.h"
#include "RecoVertex/GaussianSumVertexFit/interface/VertexGaussianStateConversions.h"