function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brahim-Bounab, Hayette & Bendjaballah, Mohamed', 1],
    ['Fanciulli, Pietro Paolo & Dallai, Romano', 1],
    ['Mayvan, Mahmood Mehrafrooz & Greenslade, Penelope', 9],
    ['Pomorski, Romuald J. & Skarzyński, Dariusz', 1],
    ['Smolis, Adrian', 9],
    ['Smolis, Adrian & Deharveng, Louis & Kaprus’, Ighor J.', 3],
    ['Smolis, Adrian & Kahrarian, Morteza & Piwnik, Agata', 3],
    ['Smolis, Adrian & Kuznetsova, Nataliya', 9],
    ['Smolis, Adrian & Kuznetsova, Nataliya & Pasnik, Grzegorz', 5],
    ['Smolis, Adrian & Shayanmehr, Masoumeh & Kuznetsova, Nataliya', 3],
    ['Smolis, Adrian & Skarzynski, Dariusz', 5],
    ['Smolis, Adrian & Skarżyński, Dariusz & Gwiazdowicz, Dariusz J.', 1],
    ['Smolis, Adrian & Skarżyński, Dariusz & Pomorski, Romuald J.', 4],
    ['Thibaud, Jean-Marc', 8],
    ['Yahyapour, Eliye & Shayanmehr, Masoumeh', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=63)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);