Efficiency of high- and low-voltage pulse combinations for gene electrotransfer in muscle, liver, tumor, and skin Tags: André F,Čemažar M,Eriksen J,Gehl J,Golzio M,Hojman P,Miklavčič D,Mir LM,Neumann E,Pavšelj N,Preat V,Rols MP,Serša G,Teissie J