Some may be turned off by the long queue but it is worth the waiting time. Prior to her, I went to another doctor who has shorter queue, very friendly and chatty, but when it comes to complications, he is not so confident. Dr Loo is friendly too, but she doesn't talk unnecessary stuff which I like, every visit is quick yet efficient. When there are complications, she is very knowledgeable and skillful. Despite her busy schedule, she called me personally to follow up on the 'complications' I had which I thought she would asked her nurse to do it.