Medical service providers and hospitals (''szpitale'') in Poland are subordinate to the Ministry of Health; it provides administrative oversight and scrutiny of general medical practice, and is obliged to maintain a high standard of hygiene and patient care. Poland has a universal healthcare system based on an all-inclusive insurance system; state subsidised healthcare is available to all citizens covered by the general health insurance program of the National Health Fund (NFZ). Private medical complexes exist nationwide; over 50% of the population uses both public and private sectors.