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                                                                    EXHIBIT 23.3
 
                       CONSENT OF INDEPENDENT ACCOUNTANTS
 
     We consent to the inclusion in this registration statement on Form S-1 of
our report dated February 22, 1996, on our audit of the financial statements of
Neonatal Specialists, Ltd. We also consent to the reference to our Firm under
the caption "Experts."
 
                                          JOHNSON & MOSER, LTD.
 
Scottsdale, Arizona
June 28, 1996