▁the ▁Integr ative ▁and ▁Be havior al ▁Card i ology ▁Program ▁at ▁Mount ▁S ina i ▁Hospital ▁in ▁New ▁York ▁City ▁in ▁ 2 0 0 0 , ▁finally ▁re loc ating ▁to ▁Columbia ▁University ▁Medical ▁Center ▁in ▁New ▁York ▁City ▁in ▁ 2 0 0 3 ▁to ▁form ▁the ▁Center ▁for ▁Be havior al ▁Card i ov asc ular ▁Health ▁where ▁he ▁worked ▁until ▁his ▁death ▁in ▁ 2 0 0 9 . ▁ ▁Although ▁he ▁participated ▁in ▁a ▁great ▁deal ▁of ▁phys i ological ▁research ▁early ▁in ▁his ▁career , ▁Pick ering ' s ▁research ▁in ▁behavior al ▁determin ants ▁and ▁consequences ▁of ▁hy pert ension ▁formed ▁the ▁heart ▁of ▁the ▁program . ▁Thus , ▁Pick ering ▁was ▁one ▁of ▁the ▁earliest ▁research ers ▁to ▁employ ▁amb ul atory ▁blood ▁pressure ▁( AB P ) ▁monitoring , ▁and ▁contributed ▁to ▁the ▁knowledge ▁that ▁clin ic ▁blood ▁pressure ▁measures ▁are ▁pr one ▁to ▁both ▁un system atic ▁and ▁system atic ▁errors , ▁and ▁are ▁hence ▁less ▁useful ▁for ▁the ▁prediction ▁of ▁target ▁organ ▁damage ▁and ▁ad verse ▁card i ov asc ular ▁events ▁than ▁AB P . ▁In ▁the ▁course ▁of ▁this ▁research , ▁he ▁began ▁to ▁examine ▁the ▁nature ▁of ▁the ▁errors ▁more ▁closely ; ▁for ▁example , ▁he ▁was ▁one ▁of ▁the ▁first ▁to ▁identify ▁the ▁phenomen on ▁of ▁" white ▁coat ▁hy pert ension ", ▁in ▁which ▁patients ▁exhib it ▁poor ▁blood ▁pressure ▁control ▁only ▁in ▁the ▁phys ician ' s ▁office , ▁leading ▁to ▁a ▁false ▁diagn osis