Get Unique days per MD per patient

[Victor]

Hi all:

Enclosed Excel file where I find the unique patients per MD using this array formula (enter has array):

=SUM(IF(FREQUENCY(IF($B$2:$B$7=$E2,MATCH($A$2:$A$7,$A$2:$A$7,0)),ROW($A$2:$A$7)-ROW($A$2)+1),1))

Now I am trying to get the unique stay days per patient per MD using this array (which not work - result #value!):

=SUM(IF(FREQUENCY(IF(AND($A$2:$A$7=$F2,$B$2:$B$7=$E2),MATCH($C$2:$C$7,$C$2:$C$7,0)),ROW($C$2:$C$7)-ROW($C$2)+1),1))

Please see enclosed Excel 2010 file to see if you can help me to correct this array enter formula.

Thanks

Victor