function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chang, Runlei & Duong, Tuan A. & Taerum, Stephen J.', 1],
    ['Min Wang, Hui & Wang, Zheng & Liu, Fu & Xu Wu, Cheng', 1],
    ['Strzalka, Beata & Jankowiak, Robert & Bilanski, Piotr', 1],
    ['Yin, Mingliang & Wingfield, Michael J. & Zhou, Xudong', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 4, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);