Passage: Lina Medina was born in Ticrapo, Castrovirreyna Province, Peru, to silversmith Tiburelo Medina and Victoria Losea. Her parents brought her to a hospital at age five due to increasing abdominal size. Doctors originally thought that she had a tumor, but they then determined that she was in her seventh month of pregnancy. Dr Gerardo Lozada took her to Lima to have other specialists confirm that she was pregnant.Newspaper accounts indicate that interest in the case developed on many fronts. The San Antonio Light newspaper in Texas reported in its 16 July 1939 edition that a Peruvian obstetrician and midwife association had demanded that she be transported to a national maternity hospital. The paper quoted reports in the Peruvian paper La Crónica that an American film studio had sent down a representative "with authority to offer the sum of $5,000 to benefit the minor" in exchange for filming rights, but "we know that the offer was rejected". The article noted that Lozada had made films of Medina for scientific documentation and had shown them while addressing Peru's National Academy of Medicine; some baggage carrying the films had fallen into a river on a visit to the girl's hometown, but enough of his "pictorial record" remained to "intrigue the learned savants".A month and a half after the original diagnosis, Medina gave birth to a boy by caesarean section. She was 5 years, 7 months, and 21 days old, the youngest person in history to give birth. The caesarean birth was necessitated by her small pelvis. The surgery was performed by Lozada and Dr Busalleu, with Dr Colareta providing anaesthesia. The doctors found that she already had fully mature sexual organs from precocious puberty. Dr. Edmundo Escomel reported her case in the medical journal La Presse Médicale, including the additional details that her menarche had occurred at eight months of age, in contrast to a past report stating that she had been having regular periods since she was three years old (or 2½ according to a different article).Medina's son...

Question: Who was the anesthesiologist during the surgery?
Dr Colareta