PT - JOURNAL ARTICLE AU - Lisa R Hirschhorn AU - Etienne V Langlois AU - Asaf Bitton AU - Abdul Ghaffar TI - What kind of evidence do we need to strengthen primary healthcare in the 21st century? AID - 10.1136/bmjgh-2019-001668 DP - 2019 Aug 01 TA - BMJ Global Health PG - e001668 VI - 4 IP - Suppl 8 4099 - http://gh.bmj.com/content/4/Suppl_8/e001668.short 4100 - http://gh.bmj.com/content/4/Suppl_8/e001668.full SO - BMJ Global Health2019 Aug 01; 4