Updates on Auditory Outcomes of COVID-19 and Vaccine Side Effects: An Umbrella Review.

Purpose: This umbrella review synthesizes and discusses systematic reviews (SRs) and meta-analyses (MAs) on auditory outcomes associated with COVID-19 infection and vaccination side effects. It is innovative in offering a comprehensive synthesis of evidence across adults and infants while summarizing vaccine-related auditory side effects.

Method: This literature search followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020 guidelines, with no restrictions on population age or symptom severity.

The National Association of Medical Examiners Position Paper: Second Autopsies.

Second autopsies are uncommon in the United States yet are of significant public value. A second autopsy may be sought when the first autopsy findings are disputed, considered biased, or inadequately communicated. Second autopsies are technically and interpretatively difficult and usually rely heavily on investigative information, first autopsy findings, and additional documentation from the first autopsy.

Iterative synthesis of 1,3-polyboronic esters with high stereocontrol and application to the synthesis of bahamaolide A.

Polyketide natural products often contain common repeat motifs, for example, propionate, acetate and deoxypropionate, and so can be synthesized by iterative processes. We report here a highly efficient iterative strategy for the synthesis of polyacetates based on boronic ester homologation that does not require functional group manipulation between iterations. This process involves sequential asymmetric diboration of a terminal alkene, forming a 1,2-bis(boronic ester), followed by regio- and stereoselective homologation of the primary boronic ester with a butenyl metallated carbenoid to generate a 1,3-bis(boronic ester).

The Influence of Male- and Female-Spoken Vowel Acoustics on Envelope-Following Responses.

The influence of male and female vowel characteristics on the envelope-following responses (EFRs) is not well understood. This study explored the role of vowel characteristics on the EFR at the fundamental frequency (f0) in response to the vowel /ε/ (as in "head"). Vowel tokens were spoken by five males and five females and EFRs were measured in 25 young adults (21 females).