The Clinical Presentation of Culture-positive and Culture-negative, Quantitative Polymerase Chain Reaction (qPCR)-Attributable Shigellosis in the Global Enteric Multicenter Study and Derivation of a Shigella Severity Score: Implications for Pediatric Shigella Vaccine Trials. - Pavlinac PB; Platts-Mills JA; Tickell KD; Liu J; Juma J; Kabir F; Nkeze J; Okoi C; Operario DJ; Uddin J; Ahmed S; Alonso PL; et al. (Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2021)