function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ashigha, I. V. & Sen, S. & Pavittu, M. S.', 2],
    ['Bayer, Steffen', 73],
    ['Feng, Ping & Ma, Yan Yan & Yang, Zi Zhong', 1],
    ['Feng, Ping & Zhao, Yu & Wu, Xiu-Mei & Ma, Yan-Yan', 5],
    ['Jäger, Peter', 3],
    ['Norma-Rashid, Y. & Li, Daiqin', 1],
    ['Omelko, M. M. & Fomichev, A. A.', 2],
    ['Palmgren, P.', 1],
    ['Zhao, Dan-chen & Fei, Ming-hui & Zeng, Xin & Ying, Yuan-hao', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=89)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);