Veterans Affairs Palo Alto Healthcare System, Palo Alto, CA 94304, USA. abhaduri@stanford.edu|Veterans Affairs Palo Alto Healthcare System, Palo Alto, CA 94304, USA. abhaduri@stanford.edu|Veterans Affairs Palo Alto Healthcare System, Palo Alto, CA 94304, USA. abhaduri@stanford.edu|Veterans Affairs Palo Alto Healthcare System, Palo Alto, CA 94304, USA. abhaduri@stanford.edu|Veterans Affairs Palo Alto Healthcare System, Palo Alto, CA 94304, USA. abhaduri@stanford.edu