A Second Class stamp http://www.meckis.com/stmap_73ngz9i.html?duratia.zyloprim.viagra.combivent liv.52 ds yahoo answers  There are around 50 datasets in total available from the NHS, with a very high population of primary-care data. Governance permissions from the HRA’s Ethics and Confidentiality Advisory Groups mean these datasets can now be supplied to, and linked for, any approved researcher with an approved research protocol.