function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Gagarin, Vladimir G.', 2],
    ['Gagarin, Vladimir G. & Tu, Nguyen Dinh', 1],
    ['Holovachov, Oleksandr', 2],
    ['Jacob, Jini & Jaleel, Abdul & Vijayan, Anil Kumar', 2],
    ['Khudhir, Manda & Hodda, Mike & Nicholas, Evelyn', 7],
    ['Kovalyev, Shota V. & Miljutina, Maria A.', 4],
    ['Leduc, Daniel', 8],
    ['Leduc, Daniel & Verdon, Valentin & Zhao, Zeng Qi', 1],
    ['Miljutin, Dmitry M. & Miljutina, Maria A.', 9],
    ['Portnova, Daria', 2],
    ['Revkova, Tatiana N.', 6],
    ['Shahina, F. & Nasira, K. & Firoza, K. & Erum, Y. I.', 3],
    ['Tchesunov, Alexey V. & Jeong, Raehyuk & Lee, Wonchoel', 2],
    ['Wen, Guo & Huixin, Liang & Yanwei, Lv & Chunming, Wang', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=51)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);