Free Access
%PDF-1.6 % 4 0 obj <> endobj xref 4 8 0000000016 00000 n 0000000595 00000 n 0000000655 00000 n 0000000869 00000 n 0000001001 00000 n 0000001205 00000 n 0000001246 00000 n 0000000456 00000 n trailer <]>> startxref 0 %%EOF 11 0 obj <>stream xb```e``bahLcbM~(V 3C] t endstream endobj 5 0 obj <> endobj 6 0 obj <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/Type/Page>> endobj 7 0 obj <>stream H*2PHbw.=S3#sC36445T05302V034ճ4WH5Vp 0EF endstream endobj 8 0 obj <> endobj 9 0 obj <> endobj 10 0 obj <>>>/Type/XObject/BBox[0 0 403 546]/PTEX.FileName(U:/EDP/NLM/AA/aa36007/Tex2PDF/fig3-eps-converted-to.pdf)/FormType 1>>stream xKeY߭-(ׂMBXD^S6HӴ{|hl?gߟ?s?Y=זgg&?׋o}9.̻UXGgo8ǶG#iX p]9O\#gկ ir}%i ˱4Pu[IoՖg6Xf)Vng'ah!0X#a y._O]qiD\Aj5MOVI=oҎgeԌ7 [}~D ykO; ·:ڪn$lǦo-O ]|<4MBֶS3$loK3 IV۶h.e)Ϧoi}]|5Mֹ&ajfIGTeYq9귔&!+*=eY\iKirF$l=]\yLVpd "pla+j8a+j8 b[`'8a+8 uK؉*B>[Qѭa+885긴&a+ $bI|=*9Ra+*9ak9z[ Vrd "rla+j9a+j9 ly=G Ws,>ETsiMVTsd "WsI؊z5[Qϑ5[]XS{=Jp–ttxER#kyEG /=Q1 s=+^y2yrϖY,z\KQYkF=+v볂=r>5v&"ž{IJU5l<~ eNYc5FvuyONm\S?i0 Ӷ) {\Y3]2'29=ֆR"AI{Dz) yV0 wJA// 2a_܂(7eeC$C d?H\qՑW (ˢ(sRů>0NANVꗑ\825i4ie+i#췴r%bx{8Xb)`-ڪvedQ# g#RaZ_,~06Z:V yAj^˥Ȇ,׷s`"Zz۲ZJYӟiPϸeBO 'b1K0ڊ7~xB̬K]S㒤55ox j.UD_,W~U>V%FLgef] .TFƱ^i? #+g}e *Ƚ(>JfAm/(* geTPY#yΨUFKZ{N٭V}Ky:Kt+[eX7|{) tGYP<X*̬ґ|}f8Pd`ryO+,|rM#@H>Kb H}^k1UN0 JI;ev¾ݗti5Qi$IbEP<$Ixe\3F/U+j@)#˯ZRᔲB%;c0J<~i kʐ8(,i4({{%KE*/(5#K0zb{_<__Rq6Ԝ^/0$fFh`ĩY@1'奔C.%"sv[oJ[|tQH|,̬+fIPYut2ڻ_R]n*#YX>O2윪 V{;F~)HLj?OX>Oƿ_E:w 3kM70zb{e,"FpISYef|q䉅NAAadq並|„P>> rr$2^(u$(I$jt3Roۭ2b^>5_9J\30򯕑r 'p|7 3xuOafm"8hgvy ?Eл(ȕWe( sw۩0;9G,^î챎_:E{_=ZQ9eQ,pWXb 'MC>Hw/9|a+E7z2ws[p r8w ߭[ŠfZ}_r{ (JmU#l|(4 P5XEF!,\Y[D0lKs^>̬|VUqoM/e3B"km( PoS+MؿmocP7w n5F 'W.Ȧވ.c 8JQqSFo8\|5 íyE,*QFNݤRr$pm ),RNaω¾p,;]zVO ;>_g|$x_*\u"ruyp&]rjߟsV97_l>+(T.Wf +w٦2WMPZDda< *˰SUPb߇?wpֲ0%E/*,ubͩZeF +7_RXLLh(%eFQ3Ie(믅rZҌ(2Ke&(ERFaZ !"vޡx>T&WXBWaرj4_~i 3v#/Ca T2}^[KI8j(=$Քœ4^Xz]QY&gI ",M e+Edp 042X[]^Y,^d9#RN(20zRG+)_zfȻ|rk/2(>+QT!균_W~7C2 OSQjNF:T?^ dw/2[}})#u$%UX7ٔ5[q lׁ}u]mZikf "VOA%+X-YAIJ3Oyb.L!ɨ 0ÏtLLkvj Ɂ8mSj\Ӟe{ ul%ܱ%YAIJ ')=Xű?.%ƃuO)9%FT$5s%˦HV}V%k="G"VJ"v4D}?m-i ҅^XlRMyh8"QrZO2? [Ze JM+ Uޫ3?gnufork? ֏d\')$QdN>gv/s2zލWE"o<){D[0doe?MH$]['QRߔO iYAƿNkM>i3 WB\,h-DNv g]kP_g4~s Q|a9WۦsMQ,Kn'ޕF`Y~J(lfIxEΰ%)289)(b> J PKRDD/z- "RK9}9@8PFϧ\IaFh9Dǿ |i.b/JܣoO^o;2(3e#Δym]f;0Y;?ʮ J]ۼj&`TưUX&V;P~oeleU6ľ)Χ$waRFO,E!/L•=_|2Y+ 0W6#h# d@M(tp吃2C /=NcZQL~ "qQD?-VпqxN(stf^ȿ gܯ/g{+ck)R~ ˯gaY,K\yba|/ ya.S!ЙFQZ(%0I֭SӐ_y8AMx:}"]6%f./,hR,]%[Ǹx}NLq߸*3ku'FmHҲcѕ+l>8,6~@]B>goQuH/cG;z~^af06X(,-8e% %~SX_V0Ll愒Md)F4R2%O -Obco[!0 Z2L`,̢,X2v+fէf>X}U,]Ny2XU2cOQ:y2Խ>'G|53vga 3K`aQSϓ(,.ZXz>5S38Q^O:4QG;߫0,>}@oH eBF/̬E_ȲU]`D)T C \'&2* ff7v6,lx-Q'*UX^W4 O{ ,a뿭Z2Z2 ht f'ebI!p]*S/|-̬'RI() IQ >׎l QK]lօz, eaf5,Ȓ_\XZwy e%A _eO)1.)¾'qη*cUد1H}S[ ;mwy_3*t #Zb.. ˘0עuO)& pQ)pUX[_]XZRIϒq :%EKacJ uaii)'j^R6I\kU胨#e)Ѵt3zʿ2)ݐ }%xm,.ŵ-X ϟN{5)3ʅv^hVt[bU=Gz^A8Qqd{E#zZǧ(1^+9[&YQ+4W1c+SZx0SKefN(t 5VrSЂ8yx|a]fW&eZqv'V&e]l8Ivȫ Vԓ1Zωp,+AedUFJOn+8=ɸ^IW# ck0~➉]~ 8&j)Y"jZq +WFb+/sFS&gJwq( _)V3*:GOE|iȷ2*%:b [ʨԥ'VXOYY+b'c2|;f)uXcuߛb[н ^M (+pE*zw)fiV)FalF 2Qzba:uK|, jDGqǛ3^2(7\rUn8ZƐ r!=$lĽ}i2Ѭomk;=ݯl+E<ɝ֟׍xdey(.F \[OǔZQ8GOql1NVa-VXYfm6=~Ħ.Wee̬'Q *z Sd8#y{,wEe0x$YrQ&ɒVa,y(Q()%Q|zMFӌBȠ4Sdҫآ.!(RDa&ele\+pS a/}=K,Gu"[ n؊aLl3+3lV?eP@ 2W꘳|+3iPSXLم^ BîyYv6eV"cfDnTfdګͭA44̬ +߷f7Pt`zfXDϢQȜٸlF)f?Q2ǿDl+bc؈evs)Wl 4-22i/#17} J2LbĪ>0#]#̾bj_ _}o:~)Bl4ő|*)r |8b6 ̺?i~!cGS2BZY?Ιlk>~c)cG_~=4Uf֎%VݞRu8\;"']ݏsطt :J留 6a>v>'J~sef~qEx"%g?\SYY' 3*3F]THX=P`XehcN|+(ͻ;v(3@B=g-]1UNZ./+̬ˏŏ|ϱ@9[-UfQpda`R.GybhE̺h9\_s5EqQlﶹ{"s =2CefxF"lIނlzڈr!f~_ hcKz,my;[X2v4qgIYY:(U*3B7!Xޣ}l]Uf/lF̬n*ojcnU9'|Ȭ*3+.[*{g?2Os.٭̬q{72kTefmvޘ˖ӭd_^bk~yQfVvVefuO{de2NlE}`G̬%2͘)VfYVfw2KB4ӿOnsC̹( ciy3@`],kA\|e+{,dd-Ȝr̬JD̬#"olefYնx̟M-Ȝ5"jefmDef\sS̊j5k̺"rωo}f"s|يڽ|~[:|z:9'JYftAcr 2gzG#3kéፐfVOOy0pB sj.tIcQS?}̊NLa/̬nmW{~SdNvsaf{{눚vfq{+ZYQS[t0ݳ"0_TXO{Ν+3+~mP,,c %AN֕AWdNOSz 7̲3"8^ H`y~.{`|G&dx?̑`y)}^Fj* 22 ||6ȅY/3Dڵ,9׍~ <0XT+R,xW~*nۅCsMpek0XBlK5~VaN 5ZZ$ C6n#^036):),;S2>[#SfZU,/.K$̃#Ycı 8s9RQ.?,a߃Ɲ T9 6mS9Bhp) VgڅPa|fݮ9ʩمk v20X+Ԋ텼8czȜU힭nE޿ m˒L 3 ڶ%o-u[+2X wv^5' oŶL>6#ܪd^5`[C>UdεD;K̺i*9fK# 3kOAxu_E!I^Bcoٽ~lf} ]?WyqBEk|][ {,;*̬uy~|Ap|+̬!c3bfؑ]*3+fay4wefweȜc99_YIؗ 3+X{zJY rY ł Hxny[ef>e!RfVdŕ3 lX,Ȝok?+̬oFSY6imWO/uլ KYh$0KUGs2|ٜi)Uj**2WM,Xlk 1+3'FZ9z0B)h}]ң tK'Oce^aXi VduЫM XTqۮzl ן >TfmivLAxi ]))U3-k 3 0/wEΕ6w+:G-eAOQefH~'s R9s [?aC^#\Z]oѡՏmڼcy:'[m\ ؎ :hO-w,}2t\- JuuDu[n 8;W>Ufks}4w^RYX 8aEx"~z:嚼¢֮xO̱&1eR ӷ/=뇳#:'2r^6oˬjk2;LOWe`!va u=X nE~ Ac>sMe<׵sa+^ƋMҕ%݆% .A+ª{|Wۺe:=Y$+^5 ;$FY*H랕{GeXcyXAp}lW=lsrATl6 2O-G+Zem9V,o9 ;=l~TU;]i. %J`yɨ0X^2%,,=RI8X#爼/ۮ tG:{N|[EYI-e("EA,a 5VGg;%afQH V#8`R dBfY\G(`y[Q-a⬶ ]YK-eO 8~2zQa4+^0u/E! EƖ0XQ% Vb {,_&"8-K`푿0XWU..s("kr-az/[`?qqD adN["/#N 7XaȒ`E"0CR+3fz(Eb犜̒07sRApIR*U,Db~2 Vhb UHX)0XKb`IYG+ 9^fvK%1^bd蘒2XD-am:bs-*߸fN*D`3V(ކD+0nY'_W,aa]%pIqe-)!Fͬ0R'evN;D#seIgot"U`EgO,aF̖0XW*l b8-eă 8OI&0|_S" k+Sadζ11jw`ETSx2XQɳN3e'+0eJW k1qM{padξGn`w) NeF;-aaRNr9Β2X1)0XU^ KApZg)02G,_ V{2X;޼X`EuG{-af]!IJ_Apz-W8^o 8%i/I"QdF#λq1`w*u5e wٹ͍~aApXAp*m?UXY1( lYN-`Y-Tk/l qeqO+uX49A3Zi V߰VG+5Al 5>Sd*uXp&Nce+w`{LApWc 0se~' GhQ`Ŕ_nXk013?L|9+ΘUfֺ/jqe_G~\0G,N|IYm槥 Θ0Xߧ Vyhy$ Vk̙`Kċ#X|2'7T+Fk`Ǩ`E*gyTfVs5R+Kb ,VtMI}kZ`uLea&@[`: 2XUkN R#FXag"!ozBƘeB #sJGP8oEZbQ8rn#d1f(ކ13Fp0>-"̬3kl)5ð% ֘–0X1e.+Θ’0XƖ0XƖ0^#Kh屐1͙) 5&ٰ% 1#% 9S>-a^>+3~ VgK-j 2Xцc1_%a},ZG"8cN)K`TzDJ666mũ$Qъ z4 7㼜{z\\\1-a|H"KjH2XFes+5f% ĨH:_?:IYho ho% Vى% hq% V8'*-NrX` l 3G-ey6 V% V% V4N&2XS,a*N sh򝔅E*N4TiA$mF(+D#FpfTp=ڠ3yl)"1" eM 7TEb~0Xg, [ uUb֬X:c[`Ŕ39gb 늻GZ`EV,aE+0XcU'[`]u_ekHֹ̹oJ|4O V$eQ8.Xpʖ0X4h$ V ̂e%gA1*Jp<N̚czXK#81zu*"1Mcun%챶$) "Ŋq\[,X%abU,a_Xº^Of2X*MG [a-0XIha% Vz`5l 3E-eJhE*Nk+ ˋ+U,13ZcApb$FpF Fl 8M#8=G V,ffIXXV`xH¹Hw؁bI[Y}^"ͽ,uP)^b'I7[`_TnQطH,afj) OTklG–0XY?Rm [`J"1;$ kW`aJܱW؃ sFl;=NlB !+vQ0s5z,Qm,uTl)FbKXXg 2XcnSP8.9-abg<:#s% Vl6)0XV}TY8^A%Ap(X+vKO,az6c_Teb@m7Ebɒ0Xw55%dKجL,aZ#znz.y9A\ŽgWApM, zJc#YjUiz=vdE[6M V&0Xgwl Z`^q,1 "jkws`si Ê% VLȖWʾv9~^b8ѫ Vl)0XwFՖ5r#+`~b yQ7TGN$=!9v0sG1v# 97h`Ŏb =}˻"1=m2XGݓ2XKq% Vv(0zKRUå VK `ED,a_"0X1Q8.VKrg`~b ]Ώl) R{("1E{jqu#?QC]rI`'z00 $*12X.u[)sb8S>,a"HʼnH`]kl:̖0NY#$ kO`EG,a#0XKyȕ.HDG$al 3[`?Dg7]-Qr;a':E0 sH2Xc_iޑX1d)Uwr=r(`ޑX`UYbg͒0X7Kؐ_,a 8c(Ra%0XуKA% Vro<1XqX`EJ,aa]p =-Y!㌀Ap#89;x/"0 #8㴅yVe%0XQ8.VtfV[ 0<D$,x[`m`yL$Fp|JJ`E,ϐ Vkq0X#KY[R+`QX1X쎂¹Hw X`EmT p?.7F?-/'cyDݲ<萵>1 Z`EL,azXQYRYX^E wDbdNP 2X7K8QI,a GEߤ+zpb T$ Vğ`EN,afq " =8X`E ӋjhoaUCwX!#zu0_̊*R;u"1:nX`=HAHw#,0XK z| p=y=A\Gfztyz\ήo0X T,afeK4*0XqgyVtvUak.@``aK,0XK*0X1T,aa P,bK;&boJ̺_̖2X3KXXab%,,tE Vt+b zK+ޓgF#8хfQ8@Ȝ;bvs, Vt+b iZ`ް% Vt}氄z[z{=ֹ,UXXE ^% VÄ"% V-axK 0XG&&, / [WE-bxYfXå,K5ޗ{ *m!-ro8xOagFpxG9PX3aKXXaKYve P&";"0X#b H% o:}&0XIb uK"0_-eVQ^beKw 0XߪLvs/'v=aQ8rBfRk7-aa1XK-ޑ> aK=:aKXXE V % oRMbKXXec;Gj% Ѿ`E_,aa1XOϳJ{c)XXº_zv#81p#8eȜ# '(;C, #81h 0XOWKXXz:* < V%aak1XzUKXX[9xHR멤{F, SDjR5 0X1y{8ba|Hob  gfQ, e^cvw^O뱤6'Oo\2 y-bbbX`psbz?(,af-ea}E+>%,]9X,?.#8_$aa][ _+% V9xDa+f %챮%&U, #81@$abQFE[$N"81EFp|+D¸ʭNL`G$ VL KXX_[7l#Yb b  cjS+~Td׽o 3X1&!0X1@,aa]"+F.fVEގyjeb9XBX`ȅX1W, p*1X1pq#6)00  Du 00 #[, Vn%̬-F7R+F7+-kޗXƑ+F7+F7+F7F7E Vn% Vny_abtC,aaۦ1o Y`>v(yx_ab D,ab D,ab D,aa+1X1"0X1rcs/';vv0 afd$g,W'KXXx+E V̹K*KoX[yr b u[)V!0XgVXXX` up)Ɩ0X17̣ _9b +fp%,zab 9@S'p(IdS8'DNL`Q8iYb <+fy%,,"+fy% V,8º׷E VK "0 –zeb.șǖ+悈%,,+"+f% VK1"̃ 3F+f%,,5"+f% '[̲v@\w1$'o yy1$/'i^N,axj3M b 3M&<<f~??/OSee s\vs̹DZ=c.,kz\9碲>.hK zuy|IۮZn猇 <7=\ΞBeeAl}6Al{\+{,,bsGV4ؽк{݇Gu!>e8a0cAX׆2FֵcqB8)$}e0BڞB^!Və[iz6Q`a>X1'ݲ 2sQWXt;aȕWcfzNcKUc6P>q5~ݱc|D|?PK>bzoT9pC"@.Pb ev >#:0vgO n=W~Ve>Pڗ˷oؿenJQY~^s_9ץ2X۾6lI7Q8-o>umZ`cFe;|7ooi@! zR0Q#Vf/u9wx^lCoQ <fz{ӱ@>w,?Էo#m . ։^Qo?E~v[B ƎP~R=7-lȞۛ9>6%u:bn雌w[*Gh_efOd^8}΅^H*v̙^ :6ǙUbT? 4n+FIϝΞ˶ 'FlҜ3bwkdx"XUj剽JYd ,Ȝ =\MX־8aE;]8iefY_d6+3빭횿&džfb+B|Zaf=9xYRfG$q Ax0,>C\dq;Ab50'@24씠Puص?y}{6?.%e[%ۛ`m0X*:f W,Uc߰ujxlymS"0,pcPe̬ockNgl&W!Y6w 8 {LIV7)?NYͻ2Xޢ]" ,afOb|k3֚% M=+3%EO,L˟0lGD>zL`<*L[3i-/>sqA栖 \GY38Pkb4ӹqM< s~K2XN<12ힻ:=7-Xcנ,d6 }R`yvs)IefnȮdˑCeFo&{vu9^1=/Ȝ՛0Xk*3y_鰆B[% mBP0XXbۚ-evH+.zg sn n<, a%:WmN@ >?i o̿jO~?9eRd^v"sn ϳ *?efIZw?/INg^ȱ~# ~P<- ǽK 㱲_9V^gL)Ay8,M 奐LKwFgA1f̞12'TdOp=4t*/G\f{`yJV (WdЏs)w sh qDeE"Ȝka`jR b?ѽ2XH㦡NA6D.秌`a *%i 3k]l2u{2 59i1 0-AO%lǐh{+2ǷWSyW 4\+jЯVXYx 3˚rtqU彍#^l_Uf79RX?wtAZcw~%ďS 2f s+Lisva|֣ÅvGohv U;uE6k<h~{G9Ȭ,!ەܷ%ZYӳ g秇rz#YpL SӾEA;˸Ǡ' >݃YW _p<-:H󳇏q'Al> rc~ޘoXwȗM8K%$F8ˍ+>s38^?lvw5۰Ay z#؇E{}~A}MYo9Wzy SCfc.p |M ew ~Gb|FR; Dkoݬ|x\P9g (3BXs 5Gal |AYgh~fMK/Ӈ~P@ fSH`!ǧ2|{4Ƈ*#sb{wQfVf,"lY-A'fl2 3h>P,̑>ڢ5"s0йE-p:{֭6{g.\s|UfpV[`T>*3 )1m(uG'ČXy],y<9RP8wn|^޸yٹ#* G߻ocX 88ayo eH,0?pk 11E{T״,kZ`Qp۴wu<ŸY3뷯& 2XDgT_>fs.>t9U_kgm) ֎oz|- IGs9g|- )6#8Lg2ڜ0X>j10X~}Z罄ٷצ!c&uaP%~Q4kᇛ40|ssJ`nU+ fjG-+̬5^os=Ep|cPkSwAİmcPLxhgΏ 0M50ˋc5 g:nw/ZX̯Xq ەfVT,a`y)],5 M*a~]#Pp}5͛eSa9 Xj]150X^Ԫ% S5ǧ*+7LO 9pnͿ<t`/!" Ցj 3b)pŒ`j M%Fp|7tuNb)guY0X=o6*Fpa?#KFQ)##s+$:#% fs󖨹* `ȱl Tu/a(._IR@ H`y5(#8WV3W2&E 1˒0XG-KDEzn"s0W&0Z 0ʃ8"FIa\<;\?|;=- KGb)MK,<HbnQJ}Ua"ooRj )lN^eyإJw);]v*Y5*xA&?8e˵>qPK4}}`un%3LQ9׈Z}0Z>yɓyʤOszO`zO`R}t^'Q'N9%$F8VPu+F =m0XaZ`]#81&f/[)FO/%Fp,0X}v륔1)0Xcn5-1 8c4FpX9l?QD`>Rgn#8g N4a]u鸀Pn[0؁"8eԑXTZGd:("8cX6. dk5_-fi'ApFij$,,z-u\1˒0X#ף3*/$"Nt 0)I¹Hw$0Xc -ax`CkT<#, 3k[`՟W~[L) 3XKXX\眤V谉% V3cl  sD?%eӳX`yW/W'"" +"b C"1=qu9P~D/Fp 1 #81#8=a`ED,af]9aI8I8K% V`- W&K,$N% Vs˷SK,M-afaK,M-asU> endobj 2 0 obj <>stream 2019-07-17T07:03+05:30 2019-07-17T07:02:48+05:30 2019-07-17T07:03+05:30 TeX application/pdf uuid:23eeb330-c551-4c62-b544-fa0d4749aa3f uuid:1c4d0e10-d8e5-4c4e-b07e-0d8bc5af22ba MiKTeX pdfTeX-1.40.14 endstream endobj 3 0 obj <> endobj xref 0 4 0000000000 65535 f 0000026346 00000 n 0000026397 00000 n 0000029800 00000 n trailer <> startxref 116 %%EOF

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.