Enclosing a pen reduced time to response to questionnaire mailings.

Kerry Bell, Laura Clark, Caroline Fairhurst, Natasha Mitchell, Elizabeth Lenaghan, Jeanette Blacklock, Janet Cushnaghan, Cyrus Cooper, Neil Gittoes, Terence W O'Neill, Lee Shepstone, David J Torgerson, SCOOP Study Team

Research output: Contribution to journal › Article › peer-review