Coronavirus update -- N95 masks are best; Email question about Shingles, foot neuropathy and collagenous colitis; All about pseudogout, a form of arthritis; A variety of treatments for a typical case of enlarged prostate; New studies help decide among options for treating prostate cancer; Reversing Duchenne Muscular Dystrophy using CRISPR to fix the DNA; Can microdose Lithium treat Alzheimer’s disease? Trojan horse nanoparticle induces macrophages to reduce coronary plaque