**) According to data obtained in April 2011 from the Ministry of Health, the total number of psychiatric hospitals in Poland amounts to 218, including 138 health care centres registered in the Register of Health Care Centres as psychiatric and detoxification hospitals and 80 psychiatric wards at general hospitals. ***) Deportation custody takes place in the facilities of the Police and Border Guard organizational units for detained persons and in rooms of guarded centres established at Border Guard organizational units. Voivodeship Police Commanders and Border Guard Commanders are responsible for sectioning off rooms dedicated exclusively to deportation custody within these units13. According to the information obtained from the National Border Guard Headquarters in March 2011, 4 deportation centres (in Przemyśl, Kętrzyn, Biała Podlaska and Białystok) are located in rooms within guarded centres, whereas the remaining ones are located in Border Guard organizational units. On the basis of data obtained from individual ministries and other available sources14 accessed by the employees of the National Preventive Mechanism, it has been established that the total number of places where persons are of may be deprived of liberty, within the meaning of Article 4 of OPCAT, that is, by order of any judicial, administrative or other authorities, amounts to 1826.In the years 2008-2010, the National Preventive Mechanism carried out 252 preventive visits to 246 places of detention15, which constituted 13.5% of all units to be visited, whereas in 2008 this percentage was 4%, in 2009 – 5.4% and in 2010 – 4.4%. In 2010 the National Preventive Mechanism carried out 80 visits to 7916 places of detention. Figure 1. Places of detention in Poland in 2010 – structure and number of units (total). Centres for  foreigners  applying for  refugee status or  asylum ‐ 15                                                               13 Order No 61 of the Minister of the Interior and Administration of 3 September 2007 on determining rooms for deportation custody (Official Journal of the Ministry of the Interior and Administration 07.9.43, as amended). 14 Data obtained from: Ministry of Justice, Ministry of Health, Chief Police Headquarters, Centre for Education Development, Ministry of National Education, Ministry of Health and Social Policy, National Border Guard Headquarters. Some data have been taken from Statistical Yearbooks issued by the Chief Statistical Office. 15 The difference between the number of visits and the number of visited establishments results from the fact of repeated controls carried out by the National Preventive Mechanism (thus, the same establishment has been visited twice). Until now, repeated controls have been carried out in: Juvenile Detention Centre in Białystok, Youth Care Centre in Trzciniec, Prison in Tarnów, Prison in Czerwony Bór, Pre-trial Detention Centre in Wrocław (all in 2010). 16 Twenty-four-hour social emergency station for intoxicated persons in Gdańsk (sobering station) was visited twice in 2010.