For the 2nd one, I rented one from Celkl 尚健醫療之家 at Shatin Centre. I believe they have many branches. The contact lists can be found from the website
http://www.meridianhk.com.hk/contact_us_chi.html
If you have 孕媽媽/ 媽媽寶寶 magazine. they have advertisement there.