Given an abstract, indicate which of the provided candidate titles (Option1 and Option2) best describes it (respond with the text of the title, not option1/2).

Let me give you an example: Abstract: Some patients converted from ventricular fibrillation to organized rhythms by defibrillation-trained ambulance technicians (EMT-Ds) will refibrillate before hospital arrival. The authors analyzed 271 cases of ventricular fibrillation managed by EMT-Ds working without paramedic back-up. Of 111 patients initially converted to organized rhythms, 19 (17%) refibrillated, 11 (58%) of whom were reconverted to perfusing rhythms, including nine of 11 (82%) who had spontaneous pulses prior to refibrillation. Among patients initially converted to organized rhythms, hospital admission rates were lower for patients who refibrillated than for patients who did not(53% versus 76%, P = NS), although discharge rates were virtually identical (37% and 35%, respectively). Scene-to-hospital transport times were not predictively associated with either the frequency of refibrillation or patient outcome. Defibrillation-trained EMTs can effectively manage refibrillation with additional shocks and are not at a significant disadvantage when paramedic back-up is not available.
Which is the apt title for the abstract? option1: Refibrillation managed by EMT-Ds option2: Maintenance of compliance in a small diameter arterial prosthesis.
The answer to this example can be: Refibrillation managed by EMT-Ds
Here is why: The abstract is about refibrillation and it is also mentioned in the abstract that it is managed by EMT-Ds. So it is an apt title.

OK. solve this:
Abstract: The combined experience at two institutions was reviewed to evaluate endometrial biopsy and the prognosis for pregnancies affected by endometrial sampling during the cycle of conception. In the evaluation of 1,084 patients, 1,174 biopsies were performed. Twenty-seven endometrial biopsies were done during the cycle of conception, with spontaneous abortion occurring in six cases (22.2%). Multiple diagnoses were made (including luteal phase defects, endometritis and polyps), and interruption of pregnancy occurred. Several cases illustrate disturbing complications. Methods of minimizing pregnancy interruption and patient discomfort are available.
Which is the apt title for the abstract? option1: Endometrial biopsy in the infertility investigation. The experience at two institutions. option2: Pain in early cancer of the lungs.
Answer:
Endometrial biopsy in the infertility investigation. The experience at two institutions.