Then there are problems caused by dubious methods sometimes used to shed pounds.

The complaints concern sales agents working for the mobile companies, who are accused of using aggressive and dubious methods to drum up custom.

A refusal to accept intelligence gleaned by other countries with dubious methods entails a difficult choice.

Many of these healings were staged using audience plants and other dubious methods.

The worldly improve their odds with arguably dubious methods, chiefly bribery and doping.