With some studies showing doctors misdiagnose 1 in 5 patients, critics want more effort to go into getting diagnoses right the first time. Is there a misdiagnosis crisis? That depends, of course, on who you ask. With doctors under more pressure than ever to treat patients as quickly as possible, some argue mistakes are inevitable. The New York Times takes a look at the issue and possible solutions, profiling Isabel Healthcare, a company that specializes in diagnosis support systems.