( ( Of ( ( the ( ( approximately 70 ) percent ) ) ( that ( will ( start ( regrowing ( their hair ) ) ) ) ) ) ) ( , ( ( the majority ) ( ( should ( ( notice ( new hair ) ) ( in ( ( ( 8 to ) 12 ) weeks ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN Of) (NP (NP (DT the) (ADJP (QP (RB approximately) (CD 70))) (NN percent)) (SBAR (WHNP (WDT that)) (S (VP (MD will) (VP (VB start) (S (VP (VBG regrowing) (NP (PRP$ their) (NN hair)))))))))) (, ,) (NP (DT the) (NN majority)) (VP (MD should) (VP (VB notice) (NP (JJ new) (NN hair)) (PP (IN in) (NP (QP (CD 8) (TO to) (CD 12)) (NNS weeks))))) (. .)))
Of the approximately 70 percent that will start regrowing their hair, the majority should notice new hair in 8 to 12 weeks .
(ROOT (S (PP (IN By) (NP (CD 8) (NNS weeks))) (, ,) (NP (DT all) (JJ major) (NNS organs)) (VP (VBP start) (S (VP (VBG developing)))) (. .)))