- cert ification . ▁Many ▁of ▁those ▁dis allowed ▁registration ▁and ▁therefore ▁denied ▁entry ▁to ▁the ▁UK , ▁" des p ite ▁their ▁excellent ▁training , ▁probably ▁died ▁during ▁the ▁Hol oca ust " ▁or ▁were ▁led ▁to ▁suic ide . ▁ ▁Death ▁and ▁legacy ▁We ind ling ▁attributes ▁the ▁loss ▁of ▁records ▁and ▁lack ▁of ▁arch ival ▁material ▁on ▁migr ant ▁pract ition ers ▁in ▁general ▁to ▁the ▁delay ▁in ▁“ Ver gang en heits bew ält igung ”, ▁that ▁is , ▁the ▁coming ▁to ▁terms ▁with ▁the ▁past . ▁He ▁consequ ently ▁rel ates ▁Zam et ▁as ▁a ▁" p ione er " ▁in ▁this ▁field ▁and ▁a ▁historian ▁of ▁refuge e ▁dent al ▁sur ge ons , ▁while ▁other ▁medical ▁profession als ▁have ▁yet ▁to ▁find ▁their ▁historian . ▁ ▁Zam et ▁completed ▁his ▁Ph D ▁th esis ▁in ▁December ▁ 2 0 0 6 . ▁He ▁died ▁on ▁ 5 ▁May ▁ 2 0 0 7 , ▁and ▁his ▁Ph D ▁degree ▁was ▁awarded ▁post hum ously ▁in ▁ 2 0 0 7 . ▁ ▁In ▁acknowled g ement ▁of ▁his ▁contributions ▁to ▁period ont ology , ▁in ▁ 2 0 1 1 ▁the ▁London ▁Chapter ▁and ▁Char itable ▁Trust ▁established ▁a ▁John ▁Zam et ▁Memorial ▁Prize ▁in ▁Period ont al ▁Research ▁open ▁to ▁UK - based ▁post grad uate ▁dent al ▁students ▁studying ▁for ▁a ▁master ' s ▁degree ▁or ▁Ph D ▁who ▁are ▁undert aking ▁or ▁who ▁have ▁recently ▁completed ▁original ▁research ▁associated ▁with ▁clin ical ▁period