In 1334 an epidemic struck the northeastern Chinese province of Hopei. This “Black Death” claimed up to 90% of the population, nearly five million people. The epidemic eventually reached and decimated Tartar forces that had been attacking Kaffa, a Genoese colony on the Crimean Peninsula. In 1347, the departing Tartars catapulted plagueinfested bodies into Kaffa. The Genoese quickly dumped these...

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2014 The 6S1/2 8S1/2 caesium transition is excited in a Stark field, with a pulsed narrow-band nitrogenpumped dye-laser. It is detected by monitoring the fluorescence light emitted in the 8S1/2 6P1/2 decay. The scalarto-vector off-diagonal polarizability ratio is obtained : 03B1/03B2 = 4.8 ± 0.5. The M1 amplitude is observed through the electronic polarization created in 8S1/2 by its interferen...

The affiliation for sixth author is incorrect. Thyago Proenca de Moraes is not affiliated with #1 but with #3 School of Medicine, Pontifícia Universidade Católica do Paraná (PUCPR), Curitiba, Brazil The affiliation for fifth author is incorrect. Pasqual Barretti is not affiliated with #3 but with #1 School of Medicine, UNESP, Botucatu, Brazil There is an error in Table 1. The number of patients...