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متن کاملFeedback Effects of Rating Downgrades
This paper addresses whether credit rating downgrades feed back on the asset value of the downgraded companies, causing real losses. To investigate this issue we construct a structural credit risk model incorporating ratings and the feedback loss. To estimate the parameters of the model we develop a maximum likelihood estimator using time series of equity prices and credit ratings. Implementing...
متن کاملThe Real Effects of Sovereign Credit Rating Downgrades∗
We study the effect of sovereign credit rating downgrades on firm investment and financial policy. We identify causal effects by exploiting the effect of sovereign downgrades on corporate ratings that is due to sovereign ceiling policies followed by rating agencies. We find that sovereign downgrades lead to greater decreases in investment and leverage of firms that are at the sovereign rating b...
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BACKGROUND Neuropsychiatric side effects of oseltamivir occur occasionally, especially in infants and young patients, but nothing is known about possible contributory factors. CASE PRESENTATION We report a case of a 15-year-old Japanese female with influenza infection who developed abnormal psychiatric symptoms after administration of standard doses of oseltamivir. She had no history of neuro...
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ژورنال
عنوان ژورنال: BMJ
سال: 2017
ISSN: 0959-8138,1756-1833
DOI: 10.1136/bmj.j3266