function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Beljaev, Еvgeniy A. & Titova, Olga L.', 1],
    ['Han, Hongxiang & Galsworthy, Anthony C. & Xue, Dayong', 11],
    ['Hausmann, Axel & Parisi, Francesco & Sciarretta, Andrea', 1],
    ['Kuzmin, A. A. & Beljaev, E. A.', 1],
    ['Makhov, Ilya', 1],
    ['Mbata, Keith J. & Prins, Jurate De', 1],
    ['Pan, Zhaohui & Xian, Chunlan & Han, Hongxiang', 2],
    ['Plotkin, David & Kawahara, Akito Y.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    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);