d STB-7 sg1_2. Nonlinear regression command. d STB insert by Patrick Royston, Royal Postgraduate Medical School, London. d Support: FAX (011)-44-81-740 3119 d After installation, see help ^nl^. f sg1_2/_nlout.ado f sg1_2/nl.ado f sg1_2/nl.hlp f sg1_2/nlinit.ado f sg1_2/nlinit.hlp f sg1_2/nlpred.ado f sg1_2/nlpred.hlp