Abstract Aim Adult umbilical hernia accounts for between 3% and 14% of abdominal wall hernias, second only to inguinal hernias in frequency. The current prevalence Africa is currently unknown, but it estimated that about 50,000 patients die each year as a result hernias. We describe below the number interventions performed 2022 by European aid workers third level Hospital Tanzania using local a...

We present a necessary and almost sufftcient condition for subgame perfect implementation of social choice correspondences. In societies with at least three individuals, any social choice correspondence which satisfies no veto power and our necessary Condition a is subgame perfect implementable. Thus Condition GL is analogous to monotonicity which, by Maskin’s celebrated characterization, is ne...

☆ We are grateful to Kaushik Basu, Patrick Bolton, Rocc Debraj Ray for useful discussions. We also thank two an pants at the May 2009 “Microfoundations of Developme the WIDER conference on Land Inequality and Conflict their comments and feedback. We thank the Internation nancial support under grant RA-2009-11-025. ⁎ Corresponding author. Tel.: +1 617 353 4392. E-mail address: [email protected] (D. ...