Isolation of #Bartonella henselae#, #Bartonella koehlerae# subsp. #koehlerae#, #Bartonella koehlerae# subsp. #bothieri# and a new subspecies of B. #koehlerae# from free-ranging lions (#Panthera leo#) from South Africa, cheetahs (#Acinonyx jubata#) from Namibia and captive cheetahs from California