Authorship of bioscientific papers is a serious business. Most journals have policies that encourage transparency, making it clear who did what, but some authors take it less seriously than editors might like, and indexers don’t always get it right. Searching for common abbreviations (⇓) in PubMed (1809–2017), Embase (1974–2017), Ovid Medline (1946–2017), Philosopher’s Index (1966–2016), and Ps...