The study included:
* A screening visit of up to 21 days prior to randomization
* Randomization at baseline (Treatment was initiated with 3 days of randomization)
* A treatment period with 3-week treatment cycles until the participant met the following discontinuation criteria: had progressive disease, had unacceptable toxicity, or refused further study treatment
* A post study treatment follow-up period (a visit was scheduled every 8 weeks until death or end of study)
