OBJECTIVE
VANISH-2 Investigator Group: K Gibson, Bellevue, WA, USA; M Goldman, San Diego, CA, USA; P Hertzman, Los Alamos, NM, USA; S Hirsch, Pittsburgh, PA, USA; R Hye, San Diego, CA, USA; M Isaacs, Walnut Creek, CA, USA; M Plaza-Ponte, Monroeville, PA, USA; S Rathbun, Oklahoma City, OK, USA; J