Victorino, R. M.Sousa, A. E.2015-07-142015-07-141995Lancet, vol. 346, p. 177-179, July 15, 19950140-6736http://www.sciencedirect.com/science/article/pii/S0140673695912347http://hdl.handle.net/10451/18444engAttenuated vaccines for AIDS?other