function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Adlbauer, K. & Ayalew, Amare & Beck, R. & Drumont, A.', 1],
    ['Barševskis, Arvīds & Janovska, Marina & Aksjuta, Kristīna', 2],
    ['Botero, Juan Pablo & Tavakilian, Gérard L. & Seidel, Matthias', 2],
    ['Danilevsky, M. L. & Skrylnik, Yu. E.', 2],
    ['Danilevsky, Mikhail', 3],
    ['Danilevsky, Mikhail L.', 2],
    ['Dejean, Pierre François Marie Auguste', 1],
    ['Faizi, Fardin & Danilevsky, Mikhail L. & Ghobari, Hamed', 3],
    ['Georgiev, Georgi & Sakalian, Vladimir & Mirchev, Plamen', 1],
    ['Gradinarov, Denis & Gjonov, Ilia', 1],
    ['Gupta, Rajeev & Vitali, Francesco', 9],
    ['Karpinski, Lech & Szczepanski, Wojciech T. & lewa, Radoslaw', 3],
    ['Kasatkin, Denis', 4],
    ['Lazarev, Maxim A.', 2],
    ['Schedl, W.', 3],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=43)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);