Current data are insufficient to define the incidence of adverse events in primary vaccinees as opposed to individuals re-vaccinated after a long interval.

He still demands the resignation of Mr Papandreou, but having long opposed EU-inspired austerity measures, he now wants the second bail-out to be approved by the current parliament.

In any physical circuit that can be built, the voltage (or current) waveforms are real functions (as opposed to complex functions) of time.