function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bai, X. & Heiss, E. & Cai, W.', 17],
    ['Bai, Xiaoshuan & Heiss, Ernst & Cai, Wanzhi', 38],
    ['Contreras, Eugenia Fernanda & Coscarón, María Del Carmen', 66],
    ['Coscarón, María Del Carmen & Contreras, Eugenia Fernanda', 56],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 15],
    ['Heiss, E.', 65],
    ['Heiss, E. & Moragues, G.', 35],
    ['Heiss, Ernst', 159],
    ['Heiss, Ernst & Barr, Cheryl', 10],
    ['Heiss, Ernst & Grebennikov, Vasily', 14],
    ['Heiss, Ernst & Moragues, Gérard', 11],
    ['Heiss, Ernst & Scudder, Geoffrey G. E.', 15],
    ['Kment, Petr & Kolínová, Zdislava & Heiss, Ernst', 68],
    ['Larivière, Marie-Claude & Larochelle, André', 29],
    ['Pham, Minhlan & Bai, Xiaoshuan & Heiss, Ernst & Cai, Wanzhi', 42],
    ['Other (52)', 142]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=782)',
    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);