2986643 LAPI lipid accumulation product index 6 2986644 LAPI Lacey Assessment of Preterm Infants 3 2986647 LAPI Laser-assisted Penning ionization 1 2986648 LAPI left atrial posterior wall isolation 1 2986645 LAPI leukocyte alkaline phosphatase indices 1 2986646 LAPI lipid accumulation product 1