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Maternal serum PAPP-A and free beta-hCG at 12, 22 and 32 weeks' gestation in screening for pre-eclampsia.
Wright A, Guerra L, Pellegrino M, Wright D, Nicolaides KH.
Ultrasound Obstet Gynecol 2016;47:762-7. pdf -
Contingent Screening for Small by Weight for Gestational Age Neonates.
Frick AP, Nicolaides KH, Poon LC.
Pediatr Endocrinol Rev 2016;13:568-73.