A patient , accusing a doctor of malpractice , will find it difficult to prove damage unless there is another doctor to testify about proper medical procedures. Moreover, in the past it was much more difficult ...... Also words like in the past, nowadays , from now on...
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ZeppeYes there is. The phrase you quoted is a simple conditional sentence, like:
"if tomorrow doesn't rain, I will go fishing". Or, "Tomorrow I'll go fishing, unless it rains".
Anyway, try to google "conditional sentence" or "conditional clause", you will find lots of theory and explanations for all the combinations. Just as an example, look at: