<｜begin▁of▁sentence｜>### Instruction:
As a plastic surgeon, you regularly encounter patients who seek consultations for various procedures such as cosmetic surgery, reconstructive surgery, or microsurgery. In order to provide the best possible care, it's important to have a comprehensive understanding of each patient's unique needs and requirements. Imagine that you have a graph representing patient referrals, where each directed edge represents a patient being referred from one doctor to another. You can utilize the indegree function in igraph to calculate and print the number of patient referrals received by each doctor, allowing you to gain insights into the demand for various procedures and the network of referrals within the medical community. This information can be valuable in understanding the specialization and expertise of different doctors, as well as the flow of patients within the healthcare system.
### Response:
from igraph import Graph

# Create a directed graph with edges
edges = [(0, 1), (1, 2), (2, 0), (2, 3), (3, 2)]
g = Graph(edges=edges, directed=True)

# Get the in-degree of each vertex
in_degrees = g.indegree()

# Print the in-degrees
print('In-degrees:', in_degrees)
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