Layers Key informant Organization-field Code
Political Parliament member Opposition party PM1
  Parliament member Government party PM2
  Parliament member Opposition party PM3
Policy Government official MHLW-vaccine GO1
  Government official MHLW-other GO2
  Local health authority Institute-Tokyo wealthy district LA1
  Local health authority Institute-Tokyo poor district LA2
  Vaccine committee member External member for MHLW CM
Practice Professor Public university-Internal Medicine PO1
  Professor Public university-Health policy PO2
  Professor Public university-Infectious disease PO3
  Professor Private university-Pediatrics PO4
  Physician working at general hospital US board certified doctor CL1
  Physician working at general hospital International hospital CL2
  Nurse at general hospital US board certified nurse CL3
  Physician working at clinic Obstetrician, urban area CD1
  Physician working at clinic Pediatrician, urban area CD2
  Physician working at clinic Pediatrician, rural area CD3
Public Patient group leader Cervical cancer group PG1
  Patient group leader Polio group PG2
Table 2: List of interviewees.