@book{ Solr-530819, title = {Randomised controlled clinical trials}, series = {Developments in biostatistics and epidemiology}, author = {Bulpitt, Christopher J.}, address = {The Hague : Hingham, MA, USA}, publisher = {Martinus Nijhoff Publishers ; Distributors for the U.S. and Canada, Kluwer Boston}, year = {1983}, pages = {262}, note = {Includes index.}, }