TY - BOOK ID - 136146053 TI - Systems to rate the strength of scientific evidence : summary. PY - 2002 PB - [Rockville, Md.] : U.S. Dept. of Health and Human Services, Public Health Service, Agency for Healthcare Research and Quality, DB - UniCat KW - Systematic reviews (Medical research) KW - Evidence-based medicine. UR - https://www.unicat.be/uniCat?func=search&query=sysid:136146053 AB - ER -