Methods for locating missing patients for the purpose of long-term clinical studies.
Smith
J S
JS
Department of Orthopaedic Surgery, University of California at Los Angeles School of Medicine, USA.
Watts
H G
HG
D016208:Databases, Factual; D005500:Follow-Up Studies; D006801:Humans; D017063:Outcome Assessment, Health Care; D018579:Patient Selection; D011177:Postal Service; D012042:Registries; D014481:United States