Results 191 to 200 of about 164,521 (208)
Some of the next articles are maybe not open access.
The Role of a Second Control Group in an Observational Study
Statistical Science, 1987Paul R Rosenbaum
exaly
More is less: Topical dermatologic product nonadherence in acne: An observational study
Journal of the American Academy of Dermatology, 2013openaire +1 more source
Steroidal contraceptives and bone fractures in women: evidence from observational studies
The Cochrane Library, 2015Laureen M Lopez +2 more
exaly
Randomized Trials or Observational Tribulations?
New England Journal of Medicine, 2000Stuart J Pocock, Diana R Elbourne
exaly
Search strategies to identify observational studies in MEDLINE and EMBASE
The Cochrane LibraryJOSÉ S Marcano Belisario +2 more
exaly

