Landmarks in child abuse and neglect: three flowers in the desert. The whiplash shaken infant syndrome, by J. Caffey, Pediatrics, 1974;54:396-403; Covert video recordings of life-threatening child abuse: lessons for child protection, by David P. Southall et al, Pediatrics, 1997;100:735-760; Preventing child abuse and neglect: a randomized trial of nurse home visitation, by David L. Olds et al, Pediatrics, 1986;78:65-78