When 32-year-old Martha Kollie arrived at the newly established China-aid National Clinical Diagnosis and Treatment Laboratory in the Liberian capital of Monrovia, she was unsure if she would receive the medical care she desperately needed.   Diagnosed with a severe respiratory infection, she had previously struggled to find proper treatment in Liberia’s overwhelmed health care system.  “I came here because the other hospitals didn’t have the equipment to properly diagnose me,” said Kollie.  “The doctors told me they now have advanced…