function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Khudhir, Manda & Hodda, Mike & Nicholas, Evelyn', 1],
    ['Mráček, Zdeněk & Půža, Vladimír & Nermuť, Jiří', 1],
    ['Qiu, Lihong & Fang, Yuanyuan & Zhou, Yong', 1],
    ['Qiu, Lihong & Zhao, Jingxiu & Wu, Zhongdao & Lv, Zhiyue', 1],
    ['San-Blas, Ernesto & Morales-Montero, Patricia & Portillo, Edgar', 1],
    ['Shahina, F. & Nasira, K. & Firoza, K. & Erum, Y. I.', 1],
    ['Triggiani, Oreste & Ek, Zdenek Mrá Č & Reid, Alex', 1],
    ['Tseng, Ching-Tzu & Hou, Roger F. & Tang, Li-Cheng', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=8)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);