Exhibit 99.1

The shares of Common Stock are held as follows: 829,046 shares of common stock
held by Sanderling Venture Partners V, L.P., 233,134 shares of common stock held
by Sanderling V Biomedical, L.P., 155,143 shares of common stock held by
Sanderling V Limited Partnership, 138,046 shares of common stock held by
Sanderling V Beteiligungs GmbH & Co. KG, 199,853 shares of common stock held by
Sanderling V Biomedical Co-Investment Fund, L.P., 329,682 shares of common stock
held by Sanderling Venture Partners V Co-Investment Fund, L.P., 891,189 shares
of common stock held by Sanderling V Strategic Exit Fund, L.P. (collectively,
the Sanderling V Shares), 498,046 shares of common stock held by Sanderling
Venture Partners VI Co-Investment Fund, L.P., 15,431 shares of common stock held
by Sanderling VI Beteiligungs GmbH & Co. KG, 18,384 shares of common stock held
by Sanderling VI Limited Partnership (collectively, the Sanderling VI Shares),
3,446 shares of common stock held by Middleton-McNeil Retirement Trust. Timothy
J. Wollaeger, one of the Issuer's directors, Fred A. Middleton, Robert G. McNeil
and Timothy C. Mills share voting and investment power with respect to the
Sanderling V Shares. Robert G. McNeil, Fred A. Middleton, Timothy C. Mills and
Timothy J. Wollaeger share voting and investment power with respect to the
Sanderling VI Shares. Fred A. Middleton and Robert G. McNeil share voting and
investment power with respect to the shares held by the Middleton-McNeil
Retirement Trust. Each of these individuals disclaims beneficial ownership of
such securities, except to the extent of his or her pecuniary interest therein.