[1] Genentech Inc, San Francisco, CA USA
[2] Univ Med Ctr Groningen, Pulm Dis, Groningen, Netherlands
[3] Univ Med Ctr Groningen, Groningen, Netherlands
[4] Univ Groningen, Pathol, NL-9700RB Groningen, Netherlands
[5] Univ Med Ctr Groningen, Pathol EA10, Groningen, Netherlands
[6] Genentech Inc, OMNI Biomarker Dev, San Francisco, CA USA