Gender-selective abortion among kyopo families?

While Marmot's Hole has news that Korean-American parents remain conservative on issues of exogamy (14% oppose it, 13% agree with it, and 69% said they oppose it, but would permit it), there is an article from the New York Times indicating that preference for sons remains prevalent among Korean-Americans and that some are likely using gender-selective abortion to achieve it:

The trend is buried deep in United States census data: seemingly minute deviations in the proportion of boys and girls born to Americans of Chinese, Indian and Korean descent.

In those families, if the first child was a girl, it was more likely that a second child would be a boy, according to recent studies of census data. If the first two children were girls, it was even more likely that a third child would be male.

Demographers say the statistical deviation among Asian-American families is significant, and they believe it reflects not only a preference for male children, but a growing tendency for these families to embrace sex-selection techniques, like in vitro fertilization and sperm sorting, or abortion.

New immigrants typically transplant some of their customs and culture to the United States — from tastes in food and child-rearing practices to their emphasis on education and the elevated social and economic status of males. The appeal to immigrants by clinics specializing in sex selection caused some controversy a decade ago.

But a number of experts expressed surprise to see evidence that the preference for sons among Asian-Americans has been so significantly carried over to this country. “That this is going on in the United States — people were blown away by this,” said Prof. Lena Edlund of Columbia University.

I'd also like to see the statistics the other way (i.e., the likelihood of a daughter if the first child was a son, etc.), to see how much of this is desire to fulfill a "full set" (i.e., at least one boy and at least one girl) and not specifically son preference. Not that I think that will explain all of it, but at least a bit of it, I think. 

Anyway, what's interesting is that the kyopo families, particularly first-generation immigrants, are exhibiting traditional values (e.g., son preference, opposition to exogamy, etc.) with such staying power. While these same values are eroding or disappearing altogether (I'm trying to find the Marmot's Hole link from 2005 or 2006 that showed a majority [?] of Korean parents would accept their child marrying a non-Korean), Korean-Americans (and Indian-Americans and Chinese-Americans) continue to do things the way they think they are done back in the Motherland. 

This phenomenon is not new to me. I've encountered this with zainichi Koreans (재일교포) in Japan, who were often far more conservative than either Koreans or Japanese, including through my future ex-fiancée, but that's a story for another time.