function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alexiou, Sotiris', 2],
    ['Baena-Bejarano, Nathalie & Heads, Sam W.', 2],
    ['Cao, Cheng-Quan & Chen, Shen-Zhi & Yin, Zhan', 3],
    ['Cao, Cheng-Quan & Yang, Kai-Yan & Shen, Zi-Hao & Yin, Zhan', 2],
    ['Cao, Chengquan & Rong, Hua & Naveed, Hassan', 2],
    ['Fan, Shilv & Gu, Jun-Jie & Cao, Chengquan', 2],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 4],
    ['Gupta, Sunil Kumar & Shi, Jian-Ping & Chandra, Kailash', 2],
    ['Hollier, John & Heads, Sam W.', 9],
    ['Monnerat C. & Thorens P. & Walter T. & Gonseth Y.', 4],
    ['Saussure, Henri de', 6],
    ['Skejo, Josip & Rebrina, Fran & Szövényi, Gergely', 2],
    ['Woo, Brandon', 3],
    ['Yong, Sheyla & Perez-Gelabert, Daniel E.', 2],
    ['Zheng, Chengjie & Cao, Chengquan & Gu, Jun-Jie', 2],
    ['Other (13)', 13]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=60)',
    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);