Dr Sivaramakrishna Iyer Padmavati, one of India’s top cardiologists, died of a cardiac arrest on Saturday, PTI reported. The 103-year-old doctor had tested positive for the coronavirus earlier this month.

Padmavati, who was the founder of the National Heart Institute in Delhi, underwent treatment for the infection at the hospital for the past 11 days. She was on ventilator support.

“Dr S Padmavati, an eminent cardiologist, rather the first female cardiologist of India, popularly known as ‘God Mother of Cardiology’ passed away on August 29 due to COVID-19 infection,” the National Heart Institute said in a statement, according to PTI. “She had breathing difficulty and fever. She developed pneumonia in both lungs and needed ventilator support. However, she sustained a cardiac arrest and passed away.”

Born in Myanmar, Padmavati came to India during World War II in 1942. She founded the National Heart Institute in 1981. Padmavati went on to win the Padma Bhushan in 1967 and the Padma Vibhushan in 1992 for her pioneering work in the field of cardiology.

Doctors and politicians took to Twitter to pay their tributes to Padmavati. “My humble tribute to Dr SI Padmavati, Director of Delhi’s National Heart Institute & Founder President of All India Heart Foundation,” Union Health Minister Harsh Vardhan wrote on Twitter. “A Padma Vibhushan awardee, she was India’s 1st [first] woman cardiologist and established the 1st cardiac clinic in N India.”

Here are some other tributes