function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Borges, Paulo A. V. & Gaspar, Clara', 2],
    ['Crespo, Luis C & Domenech, Marc & Enguidanos, Alba', 1],
    ['Dean, David Allen', 1],
    ['Duperre, Nadine & Tapia, Elicio', 5],
    ['Henrard, Arnaud & Jocqué, Rudy', 19],
    ['Izquierdo, Matías Andrés & Ramírez, Martín J.', 114],
    ['Lin, Yejie & Li, Shuqiang & Mo, Haolin & Wang, Xihao', 2],
    ['Lin, Yejie & Wu, Lingbing & Cai, Ducheng & Li, Shuqiang', 1],
    ['Lipke, Elisabeth & Michalik, Peter', 2],
    ['Liu, Keke & Henrard, Arnaud & Xiao, Yonghong & Xu, Xiang', 3],
    ['Liu, Keke & Xiao, Yonghong & Xu, Xiang', 3],
    ['Song, Chenxue & Tong, Yanfeng & Bian, Dongju & Li, Shuqiang', 9],
    ['Suzuki, Yuya & Hidaka, Ryota & Tatsuta, Haruki', 2],
    ['Tong, Yanfeng & Li, Shuqiang', 7],
    ['Wang, Xiaohan & Bian, Dongju & Tong, Yanfeng & Yang, Zizhong', 3],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=180)',
    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);