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Table 4 Initial Conditions.

From: A sex-role-preference model for HIV transmission among men who have sex with men in China

Compartment

Description

Initial Value

S T

susceptible Only-Top MSM

2.4251 × 106

S V

susceptible Versatile MSM

1.5418 × 107

S B

susceptible Only-Bottom MSM

2.5908 × 106

I T

infected Only-Top MSM

3.6931 × 104

I V

infected Versatile MSM

2.3480 × 105

I B

infected Only-Bottom MSM

3.9455 × 104