Using unannounced standardised patients to obtain data on quality of care in low-income and middle-income countries: key challenges and opportunities.
Virginia WisemanMylene LagardeRoxanne KovacsLuh Putu Lila WulandariTimothy Powell-JacksonJessica KingCatherine GoodmanKara HansonRosalind MillerDong XuMarco LiveraniShunmay YeungDumisani HompasheMishal KhanRonelle BurgerCarmen S ChristianDuane BlaauwPublished in: BMJ global health (2019)