# (before this loop was inside that sub loop so it was O(n^2) )
my $items_any_available;
$items_any_available = ItemsAnyAvailableAndNotRestricted( { biblionumber => $biblioitemnumber, patron => $patron })
$items_any_available = ItemsAnyAvailableAndNotRestricted( { biblionumber => $biblionumber, patron => $patron })
if $patron;
foreach my $itemnumber ( @{ $itemnumbers_of_biblioitem{$biblioitemnumber} } ) {
-