function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['El-Wakil, Eman S. & El-Kholy, Hanan S. & El-Araby, Rady E.', 1],
    ['Khan, Navee Ahmed & Iqbal, Junaid & Siddiqui, Ruqaiyyah', 1],
    ['Khwon, Woo Jun & Park, Jong Soo', 3],
    ['Kornicker, Louis S. & Harrison-Nelson, Elizabeth', 1],
    ['Kudryavtsev, Alexander & Hausmann, Klaus', 1],
    ['Kudryavtsev, Alexander & Wylezich, Claudia & Pawlowski, Jan', 1],
    ['Kudryavtsev, Alexander & Wylezich, Claudia & Schlegel, Martin', 3],
    ['Lee, Won Je & Patterson, David J.', 1],
    ['Minor, Pablo', 2],
    ['Patsyuk, M. K.', 7],
    ['Ptáčková, Eliška & Falteisek, Lukáš & Kostygov, Alexei Y.', 4],
    ['Shiratori, Takashi & Ishida, Ken-Ichiro', 1],
    ['Tice, Alexander K. & L., Shadwick Lora & Fiore-Donno, Anna Maria', 3],
    ['Van Wichelen, Jeroen & D’Hondt, Sofie & Claeys, Myriam', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=33)',
    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);