Y Hacker News new | ask | show | jobs

user: msamwald created: 2014-10-10 karma: 215 http://samwald.info/ submissions: 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments Promoting simple DIY masks for Covid-19: an evidence-based call to action 18 points | 3 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments 0 points | 0 comments