function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bickel, Daniel J.', 2],
    ['Dawah, Hassan A. & Ahmad, Syed Kamran & Abdullah, Mohammed A.', 4],
    ['Ebejer, M. J.', 2],
    ['Grichanov, I. Ya.', 10],
    ['Grichanov, Igor Ya.', 36],
    ['Grootaert, Patrick & Evenhuis, Neal L.', 1],
    ['Grootaert, Patrick & Tang, Chufei & Yang, Ding', 3],
    ['Kechev, Mihail & Naglis, Stefan & Tonguç, Alper & Pollet, Marc', 2],
    ['Mukherjee, Koustav & Pramanik, Debdeep & Naskar, Atanu', 3],
    ['Naglis, Stefan & Barták, Miroslav', 1],
    ['Negrobov, Oleg P. & Maslova, Olga O. & Selivanova, Olga V.', 2],
    ['Pollet, Marc & Andrade, Rui & Gonçalves, Ana & Andrade, Pedro', 2],
    ['Pollet, Marc & Ivković, Marija', 2],
    ['Ramos, Kay & Meier, Rudolf & Nuneza, Olga & Grootaert, Patrick', 3],
    ['Samoh, Abdulloh & Satasook, Chutamas & Grootaert, Patrick', 24],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=101)',
    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);