TABLE 1.

Summary of survey participants

Question	Surveys sent, n	Respondents, n	Response rate, %
Phase I	37	26	70
Phase II stem A	37	26	70
Phase II A1	36	22	61
Phase II A2	22	22	100
Phase II stem B	36	22	61
Phase II B1	22	22	100
Phase II B2	23	22	96