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A tutorial on pilot studies: the what, why and how

Lehana Thabane*, Jinhui Ma, Rong Chu, Ji Cheng, Afisi Ismaila, Lorena P Rios, Reid Robson, Marroon Thabane, Lora Giangregorio and Charles H Goldsmith

BMC Medical Research Methodology 2010, 10:1  doi:10.1186/1471-2288-10-1

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