Section 363-D. Certain impairments of health; presumption

Notwithstanding
  any  other  provisions of this chapter to the contrary, any (i) melanoma
  or  (ii)  condition  of  cancer  affecting  the  lymphatic,   digestive,
  hematological,  urinary, neurological, breast, reproductive, or prostate
  systems, resulting in total or partial disability or  death  to  a  paid
  firefighter,  who  successfully  passed  a physical examination on entry
  into  firefighter  service,  which  examination  failed  to  reveal  any
  evidence  of  such  melanoma or condition, shall be presumptive evidence
  that,  unless  the  contrary  be  proven  by  competent  evidence,  such
  disability  or  death (a) was caused by the natural and proximate result
  of an accident, not caused by such firefighter's own willful negligence,
  and (b) was sustained in the performance  and  discharge  of  duty.  The
  provisions  of this section shall remain in full force and effect to and
  including the thirtieth day of June, two thousand five.
    * NB Expired July 1, 2005