function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bilous, Olena P. & Genkal, Sergey I. & Zimmermann, Jonas', 7],
    ['GRAEFF, C. L. & KOCIOLEK, J. P. & RUSHFORTH, S. R.', 1],
    ['Genkal, Sergei & Kulikovskiy, Maxim', 1],
    ['Grizancic, Lana & Baricevic, Ana & Smodlaka Tankovic, Mirta', 1],
    ['Kheiri, Somayyeh & Nejadsattari, Taher & Asri, Younes', 1],
    ['Kociolek, J. P. & Khursevich, G. K.', 6],
    ['Novis, Phil M. & Braidwood, Jasmine & Kilroy, Cathy', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);