Authors: Jonathan S Palmer; A Paul Monk; Sally Hopewell; Lee E Bayliss; William Jackson; David J Beard; Andrew J Price Journal: Cochrane Database Syst Rev Date: 2019-07-19
Authors: M K Campbell; V A Entwistle; B H Cuthbertson; Z C Skea; A G Sutherland; A M McDonald; J D Norrie; R V Carlson; S Bridgman Journal: Trials Date: 2011-02-21 Impact factor: 2.279