Fix grammatical errors in this sentence: Fortunately, the appearance of a kind of engineering design product helps huge amount of patients who suffer a lot from heart attack.
The patient is a patient who has a heart attack.
The patient is a patient who has a heart attack.
The patient is a patient who has a heart attack.
The patient is a patient who has a heart attack.
The patient is a patient who has a heart attack.
The patient is a patient who has a heart attack.
The patient is a patient who has a heart attack.
The patient is a patient who has a heart attack.
The patient is a
The patient is a patient who is suffering from heart attack.
The patient is a patient who is suffering from heart attack.
The patient is a patient who is suffering from heart attack.
The patient is a patient who is suffering from heart attack.
The patient is a patient who is suffering from heart attack.
The patient is a patient who is suffering from heart attack.
The patient is a patient who is suffering from heart attack.
The patient is a patient who is suffering from