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Fedeli, Ugo, Angelo Porreca, Michele Colicchia, Elena Schievano, Walter Artibani, Luigi Roberto Biasio, and Giorgio Palù. "Intravescical Instillation of Calmette-Guérin Bacillus and COVID-19 Risk." Hum Vaccin Immunother 2020.

Fedeli, Ugo, et al. "Intravescical Instillation of Calmette-Guérin Bacillus and COVID-19 Risk." Hum Vaccin Immunother 2020.