nivolumab based treatment
nivolumab alone
non squamous cell - mNSCLC - L2
non squamous - mNSCLC - L2 - all population 1   
non squamous - mNSCLC - L2 - EGFR mutant
non squamous - mNSCLC - L2 - PDL1 positive
non squamous - mNSCLC - L2 - wild type (WT)
Comparator:  vs docetaxel; 
Risk of bias:  low;   some concerns;   high;  NA;