Evaluating implementation of "management of Possible Serious Bacterial Infection (PSBI) when referral is not feasible" in primary health care facilities in Sindh province, Pakistan. - Bhura, Maria; Ariff, Shabina; Qazi, Shamim Ahmad; Qazi, Zaitoon; Ahmed, Imran; Nisar, Yasir bin; Suhag, Zamir; Soomro, Abdul Wahab; Soofi, Sajid Bashir (PLoS ONE, 2020)