Critical Appraisal

#%!!#$ !,9073,82438,884.,90/93.70,80/7841./ 2,3:97943,2435447:7-,31,20833/4308, ,,, ,:,3:39:0203:%:,8,9,:,5/0244

8:8:30 % $



!% !##$%&$%$#% &%$%#&$% &'#$%$$#$#%& #%  

#%!!#$ !,9073,82438,884.,90/93.70,80/7841./ 2,3:97943,2435447:7-,31,20833/4308, :/: O

030,8,3,5,,8:,9::/:8:,9:808:,/03,3503:8,3:/:/,,2:73, $,7,98,7,9:/:,3-,

, $5081  - 1091:/:9/,-400-/,7,9,:39:-,,8,3/4308,/,3,9,:39:  -,,8,378 . $3,9 03:7:9 ,  :/: ,3 -, ,/,, ,3 203:3,,3 ,9,,9, 8080/9 2:33 909,5 .::5 2030,8,3 8 5,507 ,2:3 :/: 9/, -40 907,: 503/0 803, 2032-:,3 .,:5,3 50309,3 ,3 907,: :,8 ,3 2030-,-,3502-,.,-3:3 / 03,7 0 !02-,., /,5,9 ,38:3 203,3,5 2,3, ,3 /8,25,,3 /,,2 :73, /,,2 80,-,., :/::73,3,/,,

!,9073,82438,884.,90/93.70,80/7841./ 2,3:97943 ,2435447:7-,31,20833/4308, 79907,/,5:/::73,90780-:9 , $5081 ,703, 502-,., -8, 202,,2 ,5, 08548:70 /,3 4:9.420 5,/,  50309,33,3,/,780,-,.,  - 0010919,8,3 :/: /,9 /,7 0:,8,3 503:8,33, ,9:9/, -40 0- /,7  ,9,,/ :/: :73, 3 9/, 01091,703, :/: 907/70- /,7  ,9,,9:,9, . :/: :73, :7,3 203,7 507,9,3 502-,., 3,2:3 502-,., /,5,9 202, , 2

8

:73,

/,7

:/:

90780-:9

,703,

:/:

80.,7,

: 2:2

203,2-,7,3808548:7/,34:9.420:73,3,



!,/,50309,3308548:70/,34:9.4203,,/,, 8548:70

 207445,/,,!,9073,$243

:9.420 

 !033,9,3 7084 2,3:978 ,3,  3.70,80/ 78 41 ./

2,3:97943

!03:8,33,2,50309

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 !03:8,33,2,503099/,203:3,,30,7,,/02574108843,  !03:8907/70-/,747,3,3/9:8/-,,:/::73,  ,2,9503090,89079:8/-,,3,2,50309  %07/,5,9 ,,2,9 02, 50309 803, 502-,., /,5,9 -074708543/038 :39: 203,25,,35079,3,,379/,38,7,305,/,50309  #.,7/ $02-, 0,  ,2 $,8, /0 !00 .00  #.8 ,,3 $,7 ,3/  ,793402 %043845380/.,3899:9438,92470&$  00300739073,943,8,!,..$3,5470  00300739073,943,,,79,3/4308,  :97943$07;.0!4.$97,90,3/!747,220$:55479;843 47/44/!747,2#4209, 47708543/3,:9472,7/802-,20/:

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-897,

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