Each baby born in the England and Wales is issued a National Health Service number, taking the form NNN-NNN-NNNN, for example 122-762-9257 (the last number being a check digit). They were formerly of the style "LLLNNL NNN", for example KWB91M 342, which continued patterns used in World War II identity cards. However, due to the decentralised nature of local NHS organisations issuing the numbers, some patients have been allocated several numbers, the ratio is more often more (one person:many numbers) than (one person:one number). The National Programme for Information Technology (NPfIT) has also shown that one person can have many numbers, although measures are being undertaken to fix duplicates in the data.