TY - RPRT TI - How randomised controlled trials (RCTs) work. AU - Linda Shields AU - Alison Twycross PY - 2005 DO - 10.7748/paed2005.09.17.7.24.c1000 UR - https://pubmed.ncbi.nlm.nih.gov/16178167/ ID - 16178167 ER -