Survival was measured from the date of registration to date of death.
The survival time was measured from the time of registration to the date of death resulting from any cause.
Overall survival was measured from the time of registration to the date of death resulting from any cause.
Time to progression (TTP) was measured from the date of registration to the date of documented progressive disease or death.
Time to progression was measured from the date of registration to the date of first progression or death from any cause.
The duration of overall survival was measured from the date of registration to the date of death from any cause or the last follow-up examination.
Progression free survival time was measured from the date of registration in the study to the date of progression or last follow-up visit.
The time to disease progression (TTP) was measured from the date of registration to the date of documented disease progression or death.
Survival time was also measured from the date of registration to the date of death or latest follow-up, and was calculated using the Kaplan Meier method (Kaplan and Meier, 1958).
