function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chang, Zhi-Min & Chen, Xiang-Sheng', 8],
    ['Chang, Zhi-Min & Zhang, Zheng-Guang & Yang, Lin', 6],
    ['Constant, Jerome', 12],
    ['Constant, Jerome & Pham, Thai-Hong & Le, Cuong Viet Canh', 4],
    ['Liang, Ai-Ping & Wang, Rong-Rong', 9],
    ['Men, Qiu-Lei & Feng, Ji-Nian & Qin, Dao-Zheng', 5],
    ['Metcalf, Z. P.', 4],
    ['Simon, Eugène', 4],
    ['Sohail, Kamran & Webb, Mick & Zhang, Yalin', 4],
    ['Stroiński, Adam & Bourgoin, Thierry & Szwedo, Jacek', 4],
    ['Walker, Francis', 4],
    ['Wang, Menglin & Stroiński, Adam & Bourgoin, Thierry', 5],
    ['Wang, Rong-Rong & Liang, Ai-Ping & Webb, Michael D.', 4],
    ['Wang, Rong-Rong & Webb, Michael D. & Liang, Ai-Ping', 6],
    ['Wang, Rong-rong & Liang, Ai-Ping', 5],
    ['Other (19)', 36]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=120)',
    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);