function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Breure, Abraham S. H. & Tardy, Emmanuel', 1],
    ['Chen, Feng & He, Hai', 1],
    ['Chen, Ronglian & Zhang, Faqi & Chen, Shilong & Chi, Xiaofeng', 2],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 1],
    ['Hodgson, Chris J. & Peronti, Ana L. B. G.', 1],
    ['Hoi, Quach Van & Dung, Luong Van & Doudkin, Roman V.', 2],
    ['Howell, Nathan & Krings, Alexander & Braham, Richard R', 2],
    ['Jarvis, Charlie', 6],
    ['Jiang, Yin-Zi & Yu, Xiang-Qin & Zhang, Tao & Peng, Hua', 3],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 3],
    ['Smith-Pardo, Allan H. & Evans, Gregory A. & Dooley, John W.', 2],
    ['Suh, Soo-Jung', 2],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 2],
    ['Yu, Xiang-Qin & Liu, En-De & Liu, Zhen-Wen & Xiao, Bo', 2],
    ['Zhao, Dongwei', 24],
    ['Other (18)', 18]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=72)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);