state ▁cancer ▁at ▁an ▁early ▁stage . ▁He ▁wanted ▁to ▁see ▁the ▁bi ological ▁history ▁of ▁the ▁disease ▁and ▁prove ▁that ▁the ▁best ▁way ▁to ▁treat ▁it ▁was ▁to ▁attack ▁any ▁signs ▁of ▁the ▁cancer ▁before ▁it ▁became ▁a ▁serious ▁issue . ▁However , ▁the ▁Bow ery ▁Series ▁lack ed ▁a ▁control ▁group ▁of ▁patients ▁who ▁were ▁not ▁bi ops ied , ▁so ▁he ▁was ▁unable ▁to ▁compare ▁data ▁with ▁his ▁experiment ation ▁group . ▁He ▁lack ed ▁any ▁proof ▁or ▁evidence ▁that ▁the ▁people ▁treated ▁were ▁able ▁to ▁live ▁longer , ▁and ▁were ▁actually ▁subject ed ▁to ▁further ▁health ▁ris ks . ▁Thus , ▁the ▁Bow ery ▁Series ▁yield ed ▁little ▁effective ▁data , ▁and ▁the ▁patients ▁suffered ▁from ▁side ▁effects ▁of ▁the ▁OP B . ▁Although ▁he ▁was ▁unable ▁to ▁accomplish ▁his ▁goals , ▁Hudson ▁set ▁the ▁preced ent ▁for ▁future ▁studies ▁in ▁a ▁push ▁for ▁the ▁screen - and - tre at ▁movement . ▁Before ▁the ▁Bow ery ▁Series , ▁pro state ▁cancer ▁could ▁only ▁be ▁detected ▁at ▁its ▁latest ▁stages ▁when ▁it ▁was ▁already ▁too ▁late ▁to ▁save ▁the ▁patient ' s ▁life . ▁However , ▁recent ▁adv anc ements ▁have ▁enabled ▁medical ▁profession als ▁to ▁diagn ose ▁the ▁cancer ▁in ▁earlier ▁stages . ▁ ▁Over ▁the ▁course ▁of ▁a ▁de cade ▁starting ▁in ▁ 1 9 5 1 , ▁Hudson ▁rec ru ited ▁over ▁ 1 2 0 0 ▁subjects ▁from ▁the ▁Bow ery ▁flo ph ouses ▁in ▁the ▁" Sk id ▁Row " ▁of ▁New ▁York .