▁A ▁study ▁of ▁Y ▁Ch rom os ome ▁Mic ros at ell ites ″ ▁with ▁Marcus ▁Feld man , ▁he ▁has ▁an ▁Erd ős – B acon ▁number ▁of ▁ 6 . ▁ ▁References ▁ ▁Category : Year ▁of ▁birth ▁missing ▁( l iving ▁people ) ▁Category : L iving ▁people ▁Category : How ard ▁Hugh es ▁Medical ▁Investig ators ▁Category : English ▁em igr ants ▁to ▁the ▁United ▁States ▁Category : 2 1 st - century ▁American ▁bi olog ists ▁Category : American ▁gen etic ists ▁Category : Pop ulation ▁gen etic ists ▁Category : P en nsylvan ia ▁State ▁University ▁al umn i ▁Category : St an ford ▁University ▁al umn i ▁Category : Univers ity ▁of ▁Chicago ▁fac ulty <0x0A> </s> ▁The ▁ 1 9 8 9 ▁World ▁Ta ek w ondo ▁Championships ▁were ▁the ▁ 9 th ▁edition ▁of ▁the ▁World ▁Ta ek w ondo ▁Championships , ▁and ▁were ▁held ▁in ▁Se oul , ▁South ▁Korea ▁from ▁October ▁ 9 ▁to ▁October ▁ 1 4 , ▁ 1 9 8 9 , ▁with ▁ 4 4 6 ▁athlet es ▁particip ating ▁from ▁ 5 9 ▁countries . ▁ ▁Medal ▁summary ▁ ▁Men ▁ ▁Women ▁ ▁Medal ▁table ▁ ▁References ▁W TF ▁Medal ▁W inners ▁ ▁Ta ek w ondo ▁Championships ▁Ta ek w ondo ▁Championships ▁Category : World ▁Ta ek w ondo ▁Championships ▁Ta ek w ondo ▁Championships ▁Category : S port ▁in ▁Se oul ▁Category : T a ek w ondo ▁compet itions ▁in ▁South ▁Korea <0x0A> </s>