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Recruiting hard-to-reach subjects: is it worth the effort?
Vollmer WM, Osborne ML, Hertert S, Buist AS. Vollmer WM, et al. Among authors: hertert s. Control Clin Trials. 1994 Apr;15(2):154-9. doi: 10.1016/0197-2456(94)90018-3. Control Clin Trials. 1994. PMID: 8205805
Recruitment for phase I of the trials of hypertension prevention.
Satterfield S, Borhani NO, Whelton P, Goodwin L, Brinkmann C, Charleston J, Corkery BW, Dolan L, Hataway H, Hertert S, et al. Satterfield S, et al. Among authors: hertert s. Am J Prev Med. 1993 Jul-Aug;9(4):237-43. Am J Prev Med. 1993. PMID: 8398224 Clinical Trial.