America's lost dogs

Affiliations

• ¹ Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
• ² Stanford University, Stanford, CA 94305, USA.
• ³ Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA. elinor.karlsson@umassmed.edu.
• ⁴ University of Massachusetts Medical School, Worcester, MA 01655, USA.