1 Geriatric Research Education and Clinical Center, VA Palo Alto Health Care System, Palo Alto, California, USA.
2 Department of Epidemiology and Population Health, Stanford University, Stanford, California, USA.
3 Center for Pharmacoepidemiology and Treatment Science, Institute for Health, Health Care Policy and Aging Research; Rutgers University, New Brunswick, New Jersey, USA.
4 Department of Pharmacy Practice and Administration, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey, USA.
5 Department of Veterans Affairs-New Jersey Health Care System, East Orange, New Jersey, USA.