3453756 SLIF scattered light intensity fluctuations 12 3453753 SLIF serum's lymphocyte immunoregulatory factors 3 3453758 SLIF sacrolumbar interbody fusion 2 3453757 SLIF Spider Local Image Features 1 3453752 SLIF spirally-layered iontronic fibrous 1 3453755 SLIF spontaneous lumbar interbody fusion 1 3453754 SLIF static load influential factor 1 3453751 SLIF stochastic leaky integrate and fire 1