▁Category : Ch air men ▁and ▁invest ors ▁of ▁football ▁clubs ▁in ▁Scotland ▁Category : Don c aster ▁Ro vers ▁F . C . ▁players ▁Category : Al fre ton ▁Town ▁F . C . ▁players ▁Category : Bar ns ley ▁F . C . ▁players ▁Category : F rick ley ▁Athlet ic ▁F . C . ▁players ▁Category : G ains borough ▁Tr inity ▁F . C . ▁players ▁Category : Go ole ▁Town ▁F . C . ▁players ▁Category : Ch el ten ham ▁Town ▁F . C . ▁players ▁Category : She ff ield ▁United ▁F . C . ▁direct ors ▁and ▁chair men ▁Category : R angers ▁F . C . ▁non - play ing ▁staff ▁Category : Associ ation ▁football ers ▁not ▁categor ized ▁by ▁position ▁Category : Year ▁of ▁birth ▁missing ▁( l iving ▁people ) <0x0A> </s> ▁Mit ral ▁val ve ▁repair ▁is ▁a ▁card iac ▁surg ery ▁procedure ▁performed ▁by ▁card iac ▁sur ge ons ▁to ▁treat ▁st en osis ▁( n arrow ing ) ▁or ▁reg urg itation ▁( le ak age ) ▁of ▁the ▁mit ral ▁val ve . ▁The ▁mit ral ▁val ve ▁is ▁the ▁" in flow ▁val ve " ▁for ▁the ▁left ▁side ▁of ▁the ▁heart . ▁Blood ▁flows ▁from ▁the ▁l ungs , ▁where ▁it ▁pick s ▁up ▁o xygen , ▁through ▁the ▁pul mon ary ▁ve ins , ▁to ▁the ▁left ▁at rium ▁of ▁the ▁heart . ▁After ▁the ▁left ▁at rium ▁fills ▁with ▁blood , ▁the ▁mit