PNG  IHDR{sRGBgAMA a pHYsod IDATx^nH- :я@Y"PLoS& Nh.Ǐw(MX]>P(j'4;ٻ|?ޡP7QNhvbEw=~CnĊf{n]uRNLfŧ﫜]_?zWY*gwU'EdV|ûwIQ;1rvw}n]uRNLfŧ﫜]_?QW}ꤨlUL8GUE*u:)j'4[*κuUQJݧN VŤn}pD]UԮRvBU1[_?QW}ꤨlUL8GU]Ьډ:*κuUqW'4++uvΪn}pD]U J[_?QWwuBRgk'ꬺ8GU]Ьډ:*κuUQ;YzC]RgUY~8*j'4+wSoVꬺ8GUEfn uJUWgሺЬMZ[_?QW7U+uV]UuwdfЬû}wORNhV;٧Y)j'4+Evsvw}nvߝӬv9~x7NiV JQݜ]w)_׻|?ޡzw;]{x]>~^0٧o }V!0٧o }V!0٧oeN uUNݝЬ0Wgg#PW }uV|~8N uUNݝЬ0Wgg#PW }uV|~8N uUNݝЬ0WgGbUE*IN87 tHIWh'9ll+!)&]UԮ}䄳}@tUQ}ͶbUE*IN8۷~8rE'''tCF7Br7QWtr}B7nt*3ʂBݧNNо݊U>ur6 gO ڷ[QJݧNVf,)u:9Av+jW,7?S''hnE*u:Y9决}ۭ]S'+g#>uWx: o j'4+'} ]uVNhVN]Ի+-ЬP+wWX}[P;Y9SwWP望ɡ:NV4ۊfee2[ hg uVhvd>:Yn+lE7} -(YuV4++يnG8[PdEhVV&ݐ:nP': Jns uVDN ur7BN?ꬺBn&74+ϝ~(Yu:)LnhV u;P& uRЬ&>v>P,:xCdE,_@ ur7ɊfeYhn~ +|)'+WfR7OV4++?ިnt*M\5˗WzvݪP7r,_^YSFwBU|yeO7jݭ u+W?ިnt*M\5޾WXkVhoѬٻ||f'NӬ잽WXhv>ٻ||f'NӬ잽WXhv>ٻ| nwRԮ}}y`wݐvhnw?F7]Evv7!E*ڷ?ޡЬWtU1館{|vBR\UŤv_] JqEWN}޾w)j'4+]UL:)jzߥЬWtU1館;w}:[UUIVl*W[_?zW'Y\o}n]ud֮rվûw}:[UGUE'Nv+U~8*j'>ivP[uUQ;I uډO(V>pD]UN|DnB]9#nBnሺPomEr6~8*&v[Ѭͮ V4++g#nBnሺ N}r}ሺ N}r}ሺ N}r}ሺ N}r}ሺ N}r}[zv^zw>uwSon+7[wnݧnnMxzNv߭MMQ Xo=u7j7{|vjEU{|vjEU{|vjEU{|vjEU{|vjEU_?οEH9IENDB`